# Interface IActivityBuilder

OptimaJet.Workflow.Core.Model.Builder.IActivityBuilder

Defines fluent operations for configuring an ordinary [ActivityDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) in a process scheme.

Namespace: [OptimaJet.Workflow.Core.Model.Builder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/)

```csharp
public interface IActivityBuilder : IBaseActivityBuilder, IProcessDefinitionBuilder
```

## Type Hierarchy

-   IActivityBuilder Current type
    -   Base interfaces
        -   [IBaseActivityBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IBaseActivityBuilder/)
            -   [IProcessDefinitionBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IProcessDefinitionBuilder/)
    -   Derived interfaces
        -   [IActivityExceptionHandlerBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IActivityExceptionHandlerBuilder/)
        -   [IActivityImplementationBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IActivityImplementationBuilder/)
        -   [IExecutionTimeoutBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IExecutionTimeoutBuilder/)

## Methods

`IActivityBuilder Name(string name)` 

Sets the name of the current activity to `name`.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `name` | `String` | The activity name to assign. |

### Returns

| Type | Description |
| --- | --- |
| `IActivityBuilder` | An [IActivityBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IActivityBuilder/) for continuing configuration of the current activity. |

`IActivityBuilder State(string state)` 

Assigns `state` to [ActivityDefinition.State](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) for the current activity.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `state` | `String` | The business state name to associate with the activity. |

### Returns

| Type | Description |
| --- | --- |
| `IActivityBuilder` | An [IActivityBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IActivityBuilder/) for continuing configuration of the current activity. |

`IActivityBuilder NotState()` 

Clears [ActivityDefinition.State](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) and sets [ActivityDefinition.IsForSetState](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) to [false](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool) for the current activity.

### Returns

| Type | Description |
| --- | --- |
| `IActivityBuilder` | An [IActivityBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IActivityBuilder/) for continuing configuration of the current activity. |

`IActivityBuilder DisableSetState()` 

Sets [ActivityDefinition.IsForSetState](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) to [false](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool), preventing the current activity from being selected by state-setting operations.

### Returns

| Type | Description |
| --- | --- |
| `IActivityBuilder` | An [IActivityBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IActivityBuilder/) for continuing configuration of the current activity. |

`IActivityBuilder EnableSetState()` 

Sets [ActivityDefinition.IsForSetState](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) to [true](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool), making the current activity eligible for selection by state-setting operations.

### Returns

| Type | Description |
| --- | --- |
| `IActivityBuilder` | An [IActivityBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IActivityBuilder/) for continuing configuration of the current activity. |

`IActivityBuilder Initial()` 

Marks the current activity as initial by setting [ActivityDefinition.IsInitial](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) to [true](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool) and [ActivityDefinition.IsFinal](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) to [false](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool).

### Returns

| Type | Description |
| --- | --- |
| `IActivityBuilder` | An [IActivityBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IActivityBuilder/) for continuing configuration of the current activity. |

`IActivityBuilder Final()` 

Marks the current activity as final by setting [ActivityDefinition.IsInitial](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) to [false](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool) and [ActivityDefinition.IsFinal](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) to [true](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool).

### Returns

| Type | Description |
| --- | --- |
| `IActivityBuilder` | An [IActivityBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IActivityBuilder/) for continuing configuration of the current activity. |

`IActivityBuilder Basic()` 

Marks the current activity as neither initial nor final by setting [ActivityDefinition.IsInitial](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) and [ActivityDefinition.IsFinal](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) to [false](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool).

### Returns

| Type | Description |
| --- | --- |
| `IActivityBuilder` | An [IActivityBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IActivityBuilder/) for continuing configuration of the current activity. |

`IActivityBuilder EnableAutoSchemeUpdate()` 

Sets [ActivityDefinition.IsAutoSchemeUpdate](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) to [true](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool), allowing Workflow Engine to update an obsolete process scheme automatically while the process is at the current activity.

### Returns

| Type | Description |
| --- | --- |
| `IActivityBuilder` | An [IActivityBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IActivityBuilder/) for continuing configuration of the current activity. |

`IActivityBuilder DisableAutoSchemeUpdate()` 

Sets [ActivityDefinition.IsAutoSchemeUpdate](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) to [false](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool), preventing automatic process scheme updates while the process is at the current activity.

### Returns

| Type | Description |
| --- | --- |
| `IActivityBuilder` | An [IActivityBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IActivityBuilder/) for continuing configuration of the current activity. |

`IActivityBuilder CreateOrUpdateAnnotation(string name, string value)` 

Adds an [Annotation](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/Annotation/) to [ActivityDefinition.Annotations](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/), or updates the first annotation whose [Annotation.Name](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/Annotation/) matches `name`.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `name` | `String` | The value to assign to [Annotation.Name](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/Annotation/). |
| `value` | `String` | The string to assign to [Annotation.JsonValue](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/Annotation/). |

### Returns

| Type | Description |
| --- | --- |
| `IActivityBuilder` | An [IActivityBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IActivityBuilder/) for continuing configuration of the current activity. |

`IActivityBuilder CreateOrUpdateAnnotation(string name, object value)` 

Serializes `value` and adds an [Annotation](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/Annotation/) to [ActivityDefinition.Annotations](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/), or updates the first annotation whose [Annotation.Name](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/Annotation/) matches `name`.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `name` | `String` | The value to assign to [Annotation.Name](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/Annotation/). |
| `value` | `Object` | The value to serialize into [Annotation.JsonValue](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/Annotation/). |

### Returns

| Type | Description |
| --- | --- |
| `IActivityBuilder` | An [IActivityBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IActivityBuilder/) for continuing configuration of the current activity. |

`IActivityBuilder DeleteAnnotation(string name)` 

Removes every [Annotation](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/Annotation/) whose [Annotation.Name](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/Annotation/) matches `name` from [ActivityDefinition.Annotations](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/).

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `name` | `String` | The annotation name to match. |

### Returns

| Type | Description |
| --- | --- |
| `IActivityBuilder` | An [IActivityBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IActivityBuilder/) for continuing configuration of the current activity. |

`IActivityBuilder DisablePersistence()` 

Configures the current activity to skip persistence of the stored current activity and business state, transition history, and persistent process parameters when entered.

### Returns

| Type | Description |
| --- | --- |
| `IActivityBuilder` | An [IActivityBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IActivityBuilder/) for continuing configuration of the current activity. |

### Remarks

Sets [ActivityDefinition.DisablePersistState](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/), [ActivityDefinition.DisablePersistTransitionHistory](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/), and [ActivityDefinition.DisablePersistParameters](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) to [true](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool).

`IActivityBuilder EnablePersistence()` 

Enables activity-level persistence of the stored current activity and business state, transition history, and persistent process parameters when the current activity is entered.

### Returns

| Type | Description |
| --- | --- |
| `IActivityBuilder` | An [IActivityBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IActivityBuilder/) for continuing configuration of the current activity. |

### Remarks

Sets [ActivityDefinition.DisablePersistState](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/), [ActivityDefinition.DisablePersistTransitionHistory](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/), and [ActivityDefinition.DisablePersistParameters](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) to [false](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool).

`IActivityBuilder DisableTransitionHistoryPersistence()` 

Sets [ActivityDefinition.DisablePersistTransitionHistory](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) to [true](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool), causing the current activity to skip writing the transition to process history when entered.

### Returns

| Type | Description |
| --- | --- |
| `IActivityBuilder` | An [IActivityBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IActivityBuilder/) for continuing configuration of the current activity. |

`IActivityBuilder EnableTransitionHistoryPersistence()` 

Sets [ActivityDefinition.DisablePersistTransitionHistory](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) to [false](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool), enabling transition history persistence when the current activity is entered.

### Returns

| Type | Description |
| --- | --- |
| `IActivityBuilder` | An [IActivityBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IActivityBuilder/) for continuing configuration of the current activity. |

`IActivityBuilder DisableParametersPersistence()` 

Sets [ActivityDefinition.DisablePersistParameters](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) to [true](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool), causing the current activity to skip saving persistent process parameters when entered.

### Returns

| Type | Description |
| --- | --- |
| `IActivityBuilder` | An [IActivityBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IActivityBuilder/) for continuing configuration of the current activity. |

`IActivityBuilder EnableParametersPersistence()` 

Sets [ActivityDefinition.DisablePersistParameters](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) to [false](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool), enabling persistent process parameter storage when the current activity is entered.

### Returns

| Type | Description |
| --- | --- |
| `IActivityBuilder` | An [IActivityBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IActivityBuilder/) for continuing configuration of the current activity. |

`IActivityBuilder DisableStatePersistence()` 

Sets [ActivityDefinition.DisablePersistState](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) to [true](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool), causing the current activity to skip updating the stored current activity and business state when entered.

### Returns

| Type | Description |
| --- | --- |
| `IActivityBuilder` | An [IActivityBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IActivityBuilder/) for continuing configuration of the current activity. |

`IActivityBuilder EnableStatePersistence()` 

Sets [ActivityDefinition.DisablePersistState](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) to [false](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool), enabling updates to the stored current activity and business state when the current activity is entered.

### Returns

| Type | Description |
| --- | --- |
| `IActivityBuilder` | An [IActivityBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IActivityBuilder/) for continuing configuration of the current activity. |

`IIdleTimeoutBuilder IdleTimeout(TimeSpan timeout)` 

Sets the interval for [ActivityDefinition.IdleTimeout](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) on the current activity.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `timeout` | `TimeSpan` | The interval converted and assigned to [ActivityTimeout.Timer](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityTimeout/). |

### Returns

| Type | Description |
| --- | --- |
| `IIdleTimeoutBuilder` | An [IIdleTimeoutBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IIdleTimeoutBuilder/) for configuring [ActivityTimeout.Type](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityTimeout/) and [ActivityTimeout.NameForSet](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityTimeout/). |

`IIdleTimeoutBuilder IdleTimeout(int timeout)` 

Sets the interval for [ActivityDefinition.IdleTimeout](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) on the current activity.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `timeout` | `Int32` | The interval, in milliseconds, to assign to [ActivityTimeout.Timer](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityTimeout/). |

### Returns

| Type | Description |
| --- | --- |
| `IIdleTimeoutBuilder` | An [IIdleTimeoutBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IIdleTimeoutBuilder/) for configuring [ActivityTimeout.Type](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityTimeout/) and [ActivityTimeout.NameForSet](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityTimeout/). |

### Exceptions

| Type | Description |
| --- | --- |
| `ArgumentException` | Thrown when `timeout` is less than zero. |

`IActivityBuilder DeleteIdleTimeout()` 

Removes [ActivityDefinition.IdleTimeout](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) from the current activity.

### Returns

| Type | Description |
| --- | --- |
| `IActivityBuilder` | An [IActivityBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IActivityBuilder/) for continuing configuration of the current activity. |

`IIdleTimeoutBuilder UpdateIdleTimeout()` 

Gets a builder for changing [ActivityTimeout.Type](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityTimeout/) and [ActivityTimeout.NameForSet](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityTimeout/) on the current activity's existing [ActivityDefinition.IdleTimeout](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/).

### Returns

| Type | Description |
| --- | --- |
| `IIdleTimeoutBuilder` | An [IIdleTimeoutBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IIdleTimeoutBuilder/) for configuring the existing [ActivityTimeout](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityTimeout/). |

### Exceptions

| Type | Description |
| --- | --- |
| `InvalidOperationException` | Thrown when [ActivityDefinition.IdleTimeout](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) is [null](https://learn.microsoft.com/dotnet/csharp/language-reference/keywords/null) or its [ActivityTimeout.Timer](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityTimeout/) is [null](https://learn.microsoft.com/dotnet/csharp/language-reference/keywords/null) or empty. |

`IExecutionTimeoutBuilder ExecutionTimeout(TimeSpan timeout)` 

Sets the interval for [ActivityDefinition.ExecutionTimeout](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) on the current activity.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `timeout` | `TimeSpan` | The interval converted and assigned to [ActivityTimeout.Timer](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityTimeout/). |

### Returns

| Type | Description |
| --- | --- |
| `IExecutionTimeoutBuilder` | An [IExecutionTimeoutBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IExecutionTimeoutBuilder/) for configuring [ActivityTimeout.Type](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityTimeout/), [ActivityTimeout.NameForSet](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityTimeout/), or [ActivityTimeout.RetryCount](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityTimeout/). |

`IExecutionTimeoutBuilder ExecutionTimeout(int timeout)` 

Sets the interval for [ActivityDefinition.ExecutionTimeout](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) on the current activity.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `timeout` | `Int32` | The interval, in milliseconds, to assign to [ActivityTimeout.Timer](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityTimeout/). |

### Returns

| Type | Description |
| --- | --- |
| `IExecutionTimeoutBuilder` | An [IExecutionTimeoutBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IExecutionTimeoutBuilder/) for configuring [ActivityTimeout.Type](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityTimeout/), [ActivityTimeout.NameForSet](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityTimeout/), or [ActivityTimeout.RetryCount](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityTimeout/). |

### Exceptions

| Type | Description |
| --- | --- |
| `ArgumentException` | Thrown when `timeout` is less than zero. |

`IExecutionTimeoutBuilder UpdateExecutionTimeout()` 

Gets a builder for changing [ActivityTimeout.Type](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityTimeout/), [ActivityTimeout.NameForSet](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityTimeout/), or [ActivityTimeout.RetryCount](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityTimeout/) on the current activity's existing [ActivityDefinition.ExecutionTimeout](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/).

### Returns

| Type | Description |
| --- | --- |
| `IExecutionTimeoutBuilder` | An [IExecutionTimeoutBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IExecutionTimeoutBuilder/) for configuring the existing [ActivityTimeout](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityTimeout/). |

### Exceptions

| Type | Description |
| --- | --- |
| `InvalidOperationException` | Thrown when [ActivityDefinition.ExecutionTimeout](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) is [null](https://learn.microsoft.com/dotnet/csharp/language-reference/keywords/null) or its [ActivityTimeout.Timer](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityTimeout/) is [null](https://learn.microsoft.com/dotnet/csharp/language-reference/keywords/null) or empty. |

`IActivityBuilder DeleteExecutionTimeout()` 

Removes [ActivityDefinition.ExecutionTimeout](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) from the current activity.

### Returns

| Type | Description |
| --- | --- |
| `IActivityBuilder` | An [IActivityBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IActivityBuilder/) for continuing configuration of the current activity. |

`IActivityExceptionHandlerBuilder CreateOrUpdateExceptionHandler(params string[] exceptions)` 

Gets a builder for the [ActivityExceptionsHandler](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityExceptionsHandler/) whose [ActivityExceptionsHandler.Exceptions](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityExceptionsHandler/) collection matches the supplied patterns, creating a [ActivityExceptionsHandler](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityExceptionsHandler/) with [ActivityExceptionsHandlerType.Ignore](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityExceptionsHandlerType/) when no such handler exists.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `exceptions` | `String[]` | The exception-name patterns evaluated by [ActivityExceptionsHandler.CanHandle(Exception)](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityExceptionsHandler/). Use [ActivityExceptionsHandler.UniversalExceptionName](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityExceptionsHandler/) to match any [Exception](https://learn.microsoft.com/dotnet/api/system.exception). |

### Returns

| Type | Description |
| --- | --- |
| `IActivityExceptionHandlerBuilder` | An [IActivityExceptionHandlerBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IActivityExceptionHandlerBuilder/) for configuring the matching or newly created [ActivityExceptionsHandler](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityExceptionsHandler/). |

`IActivityExceptionHandlerBuilder CreateOrUpdateExceptionHandler(params Type[] exceptions)` 

Gets a builder for the [ActivityExceptionsHandler](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityExceptionsHandler/) identified by the [Type.FullName](https://learn.microsoft.com/dotnet/api/system.type.fullname) of each supplied [Type](https://learn.microsoft.com/dotnet/api/system.type), creating an [ActivityExceptionsHandler](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityExceptionsHandler/) with [ActivityExceptionsHandlerType.Ignore](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityExceptionsHandlerType/) when no such handler exists.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `exceptions` | `Type[]` | The [Type](https://learn.microsoft.com/dotnet/api/system.type) instances whose [Type.FullName](https://learn.microsoft.com/dotnet/api/system.type.fullname) values identify the [ActivityExceptionsHandler](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityExceptionsHandler/). |

### Returns

| Type | Description |
| --- | --- |
| `IActivityExceptionHandlerBuilder` | An [IActivityExceptionHandlerBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IActivityExceptionHandlerBuilder/) for configuring the matching or newly created [ActivityExceptionsHandler](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityExceptionsHandler/). |

`IActivityBuilder DeleteExceptionHandler(params string[] exceptions)` 

Removes every [ActivityExceptionsHandler](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityExceptionsHandler/) whose [ActivityExceptionsHandler.Exceptions](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityExceptionsHandler/) collection matches the supplied patterns.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `exceptions` | `String[]` | The exception-name patterns that identify the [ActivityExceptionsHandler](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityExceptionsHandler/) instances to remove. |

### Returns

| Type | Description |
| --- | --- |
| `IActivityBuilder` | An [IActivityBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IActivityBuilder/) for continuing configuration of the current activity. |

`IActivityBuilder DeleteExceptionHandler(params Type[] exceptions)` 

Removes every [ActivityExceptionsHandler](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityExceptionsHandler/) identified by the [Type.FullName](https://learn.microsoft.com/dotnet/api/system.type.fullname) of each supplied [Type](https://learn.microsoft.com/dotnet/api/system.type).

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `exceptions` | `Type[]` | The [Type](https://learn.microsoft.com/dotnet/api/system.type) instances whose [Type.FullName](https://learn.microsoft.com/dotnet/api/system.type.fullname) values identify the [ActivityExceptionsHandler](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityExceptionsHandler/) instances to remove. |

### Returns

| Type | Description |
| --- | --- |
| `IActivityBuilder` | An [IActivityBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IActivityBuilder/) for continuing configuration of the current activity. |

`IActivityBuilder DeleteExceptionHandlers()` 

Removes all [ActivityExceptionsHandler](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityExceptionsHandler/) instances from [ActivityDefinition.ExceptionsHandlers](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) for the current activity.

### Returns

| Type | Description |
| --- | --- |
| `IActivityBuilder` | An [IActivityBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IActivityBuilder/) for continuing configuration of the current activity. |

`IActivityBuilder DeleteImplementation(string? actionName = null)` 

Removes [ActionDefinitionReference](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/) instances from [ActivityDefinition.Implementation](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) for the current activity.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `actionName` | `String` | The [ActionDefinitionReference.ActionName](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/) to match, or [null](https://learn.microsoft.com/dotnet/csharp/language-reference/keywords/null) to remove all [ActionDefinitionReference](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/) instances from [ActivityDefinition.Implementation](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/). |

### Returns

| Type | Description |
| --- | --- |
| `IActivityBuilder` | An [IActivityBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IActivityBuilder/) for continuing configuration of the current activity. |

`IActivityImplementationBuilder UpdateImplementation(string actionName)` 

Gets a builder for the first [ActionDefinitionReference](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/) in [ActivityDefinition.Implementation](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) whose [ActionDefinitionReference.ActionName](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/) matches `actionName`.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `actionName` | `String` | The [ActionDefinitionReference.ActionName](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/) to match. |

### Returns

| Type | Description |
| --- | --- |
| `IActivityImplementationBuilder` | An [IActivityImplementationBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IActivityImplementationBuilder/) for configuring the matching [ActionDefinitionReference](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/). |

### Exceptions

| Type | Description |
| --- | --- |
| `ActionNotFoundException` | Thrown when [ActivityDefinition.Implementation](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) contains no [ActionDefinitionReference](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/) whose [ActionDefinitionReference.ActionName](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/) matches `actionName`. |

`IActivityImplementationBuilder CreateImplementationAtBegin(string actionName)` 

Adds a new [ActionDefinitionReference](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/) to the beginning of [ActivityDefinition.Implementation](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) for the current activity.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `actionName` | `String` | The value to assign to [ActionDefinitionReference.ActionName](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/). |

### Returns

| Type | Description |
| --- | --- |
| `IActivityImplementationBuilder` | An [IActivityImplementationBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IActivityImplementationBuilder/) for configuring the new [ActionDefinitionReference](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/). |

`IActivityImplementationBuilder CreateImplementationAtEnd(string actionName)` 

Adds a new [ActionDefinitionReference](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/) to the end of [ActivityDefinition.Implementation](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) for the current activity.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `actionName` | `String` | The value to assign to [ActionDefinitionReference.ActionName](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/). |

### Returns

| Type | Description |
| --- | --- |
| `IActivityImplementationBuilder` | An [IActivityImplementationBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IActivityImplementationBuilder/) for configuring the new [ActionDefinitionReference](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/). |

`IActivityImplementationBuilder CreateImplementationBefore(string actionName, string targetActionName)` 

Adds a new [ActionDefinitionReference](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/) immediately before the first matching reference in [ActivityDefinition.Implementation](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) for the current activity.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `actionName` | `String` | The value to assign to the new [ActionDefinitionReference.ActionName](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/). |
| `targetActionName` | `String` | The [ActionDefinitionReference.ActionName](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/) of the reference before which to insert the new one. |

### Returns

| Type | Description |
| --- | --- |
| `IActivityImplementationBuilder` | An [IActivityImplementationBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IActivityImplementationBuilder/) for configuring the new [ActionDefinitionReference](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/). |

### Exceptions

| Type | Description |
| --- | --- |
| `ActionNotFoundException` | Thrown when [ActivityDefinition.Implementation](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) contains no [ActionDefinitionReference](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/) whose [ActionDefinitionReference.ActionName](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/) matches `targetActionName`. |

`IActivityImplementationBuilder CreateImplementationAfter(string actionName, string targetActionName)` 

Adds a new [ActionDefinitionReference](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/) immediately after the first matching reference in [ActivityDefinition.Implementation](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) for the current activity.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `actionName` | `String` | The value to assign to the new [ActionDefinitionReference.ActionName](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/). |
| `targetActionName` | `String` | The [ActionDefinitionReference.ActionName](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/) of the reference after which to insert the new one. |

### Returns

| Type | Description |
| --- | --- |
| `IActivityImplementationBuilder` | An [IActivityImplementationBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IActivityImplementationBuilder/) for configuring the new [ActionDefinitionReference](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/). |

### Exceptions

| Type | Description |
| --- | --- |
| `ActionNotFoundException` | Thrown when [ActivityDefinition.Implementation](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) contains no [ActionDefinitionReference](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/) whose [ActionDefinitionReference.ActionName](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/) matches `targetActionName`. |

`IActivityBuilder DeletePreExecution(string? actionName = null)` 

Removes [ActionDefinitionReference](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/) instances from [ActivityDefinition.PreExecutionImplementation](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) for the current activity.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `actionName` | `String` | The [ActionDefinitionReference.ActionName](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/) to match, or [null](https://learn.microsoft.com/dotnet/csharp/language-reference/keywords/null) to remove all [ActionDefinitionReference](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/) instances from [ActivityDefinition.PreExecutionImplementation](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/). |

### Returns

| Type | Description |
| --- | --- |
| `IActivityBuilder` | An [IActivityBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IActivityBuilder/) for continuing configuration of the current activity. |

`IActivityImplementationBuilder UpdatePreExecution(string actionName)` 

Gets a builder for the first [ActionDefinitionReference](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/) in [ActivityDefinition.PreExecutionImplementation](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) whose [ActionDefinitionReference.ActionName](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/) matches `actionName`.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `actionName` | `String` | The [ActionDefinitionReference.ActionName](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/) to match. |

### Returns

| Type | Description |
| --- | --- |
| `IActivityImplementationBuilder` | An [IActivityImplementationBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IActivityImplementationBuilder/) for configuring the matching [ActionDefinitionReference](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/). |

### Exceptions

| Type | Description |
| --- | --- |
| `ActionNotFoundException` | Thrown when [ActivityDefinition.PreExecutionImplementation](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) contains no [ActionDefinitionReference](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/) whose [ActionDefinitionReference.ActionName](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/) matches `actionName`. |

`IActivityImplementationBuilder CreatePreExecutionAtBegin(string actionName)` 

Adds a new [ActionDefinitionReference](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/) to the beginning of [ActivityDefinition.PreExecutionImplementation](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) for the current activity.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `actionName` | `String` | The value to assign to [ActionDefinitionReference.ActionName](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/). |

### Returns

| Type | Description |
| --- | --- |
| `IActivityImplementationBuilder` | An [IActivityImplementationBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IActivityImplementationBuilder/) for configuring the new [ActionDefinitionReference](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/). |

`IActivityImplementationBuilder CreatePreExecutionAtEnd(string actionName)` 

Adds a new [ActionDefinitionReference](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/) to the end of [ActivityDefinition.PreExecutionImplementation](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) for the current activity.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `actionName` | `String` | The value to assign to [ActionDefinitionReference.ActionName](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/). |

### Returns

| Type | Description |
| --- | --- |
| `IActivityImplementationBuilder` | An [IActivityImplementationBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IActivityImplementationBuilder/) for configuring the new [ActionDefinitionReference](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/). |

`IActivityImplementationBuilder CreatePreExecutionBefore(string actionName, string targetActionName)` 

Adds a new [ActionDefinitionReference](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/) immediately before the first matching reference in [ActivityDefinition.PreExecutionImplementation](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) for the current activity.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `actionName` | `String` | The value to assign to the new [ActionDefinitionReference.ActionName](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/). |
| `targetActionName` | `String` | The [ActionDefinitionReference.ActionName](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/) of the reference before which to insert the new one. |

### Returns

| Type | Description |
| --- | --- |
| `IActivityImplementationBuilder` | An [IActivityImplementationBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IActivityImplementationBuilder/) for configuring the new [ActionDefinitionReference](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/). |

### Exceptions

| Type | Description |
| --- | --- |
| `ActionNotFoundException` | Thrown when [ActivityDefinition.PreExecutionImplementation](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) contains no [ActionDefinitionReference](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/) whose [ActionDefinitionReference.ActionName](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/) matches `targetActionName`. |

`IActivityImplementationBuilder CreatePreExecutionAfter(string actionName, string targetActionName)` 

Adds a new [ActionDefinitionReference](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/) immediately after the first matching reference in [ActivityDefinition.PreExecutionImplementation](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) for the current activity.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `actionName` | `String` | The value to assign to the new [ActionDefinitionReference.ActionName](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/). |
| `targetActionName` | `String` | The [ActionDefinitionReference.ActionName](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/) of the reference after which to insert the new one. |

### Returns

| Type | Description |
| --- | --- |
| `IActivityImplementationBuilder` | An [IActivityImplementationBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IActivityImplementationBuilder/) for configuring the new [ActionDefinitionReference](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/). |

### Exceptions

| Type | Description |
| --- | --- |
| `ActionNotFoundException` | Thrown when [ActivityDefinition.PreExecutionImplementation](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) contains no [ActionDefinitionReference](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/) whose [ActionDefinitionReference.ActionName](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/) matches `targetActionName`. |

`IActivityBuilder CreateCommentary(string comment)` 

Replaces [ActivityDefinition.UserComment](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) for the current activity with `comment`.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `comment` | `String` | The user-defined comment to store. |

### Returns

| Type | Description |
| --- | --- |
| `IActivityBuilder` | An [IActivityBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IActivityBuilder/) for continuing configuration of the current activity. |

`IActivityBuilder AppendCommentary(string comment)` 

Appends `comment` to [ActivityDefinition.UserComment](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/), separating it from existing nonempty text with a line break.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `comment` | `String` | The user-defined comment text to append. |

### Returns

| Type | Description |
| --- | --- |
| `IActivityBuilder` | An [IActivityBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IActivityBuilder/) for continuing configuration of the current activity. |

`IActivityBuilder DeleteCommentary()` 

Clears [ActivityDefinition.UserComment](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) for the current activity.

### Returns

| Type | Description |
| --- | --- |
| `IActivityBuilder` | An [IActivityBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IActivityBuilder/) for continuing configuration of the current activity. |

`IActivityBuilder SetX(int? x)` 

Sets [DesignerSettings.X](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/DesignerSettings/) for the current activity.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `x` | `Nullable<Int32>` | The horizontal coordinate, or [null](https://learn.microsoft.com/dotnet/csharp/language-reference/keywords/null) to clear [DesignerSettings.X](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/DesignerSettings/). |

### Returns

| Type | Description |
| --- | --- |
| `IActivityBuilder` | An [IActivityBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IActivityBuilder/) for continuing configuration of the current activity. |

`IActivityBuilder SetY(int? y)` 

Sets [DesignerSettings.Y](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/DesignerSettings/) for the current activity.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `y` | `Nullable<Int32>` | The vertical coordinate, or [null](https://learn.microsoft.com/dotnet/csharp/language-reference/keywords/null) to clear [DesignerSettings.Y](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/DesignerSettings/). |

### Returns

| Type | Description |
| --- | --- |
| `IActivityBuilder` | An [IActivityBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IActivityBuilder/) for continuing configuration of the current activity. |

`IActivityBuilder CustomType(string customType)` 

Sets the custom activity type annotation identified by [FormBase.CustomTypeAnnotationName](https://api.workflowengine.io/core/OptimaJet.Workflow.Core/FormBase/).

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `customType` | `String` | The custom activity type identifier stored in [Annotation.JsonValue](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/Annotation/). |

### Returns

| Type | Description |
| --- | --- |
| `IActivityBuilder` | An [IActivityBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IActivityBuilder/) for continuing configuration of the current activity. |

`IActivityBuilder Ref(out ActivityDefinition activityDefinition)` 

Assigns the current [ActivityDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) to `activityDefinition`.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `activityDefinition` | `ActivityDefinition` | When this method returns, contains the current [ActivityDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/). |

### Returns

| Type | Description |
| --- | --- |
| `IActivityBuilder` | An [IActivityBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IActivityBuilder/) for continuing configuration of the current activity. |

[Previous TransitionDto](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.ApprovalMap/TransitionDto/) [Next IActivityExceptionHandlerBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IActivityExceptionHandlerBuilder/)