# Class TItemDefinition OptimaJet.Workflow.BpmnPlugin.Model.TItemDefinition Namespace: [OptimaJet.Workflow.BpmnPlugin.Model](https://api.workflowengine.io/bpmn-plugin/OptimaJet.Workflow.BpmnPlugin.Model/) ```csharp public class TItemDefinition : TRootElement ``` ## Type Hierarchy - [TBaseElement](https://api.workflowengine.io/bpmn-plugin/OptimaJet.Workflow.BpmnPlugin.Model/TBaseElement/) - [TRootElement](https://api.workflowengine.io/bpmn-plugin/OptimaJet.Workflow.BpmnPlugin.Model/TRootElement/) - TItemDefinition Current type ## Properties `public XmlQualifiedName StructureRef { get; set; }` `public bool IsCollection { get; set; }` `public TItemKind ItemKind { get; set; }` [Previous TIntermediateThrowEvent](https://api.workflowengine.io/bpmn-plugin/OptimaJet.Workflow.BpmnPlugin.Model/TIntermediateThrowEvent/) [Next TItemKind](https://api.workflowengine.io/bpmn-plugin/OptimaJet.Workflow.BpmnPlugin.Model/TItemKind/)