| INodeHandler<TData> | 
 All node handlers must be thread-safe. 
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| INodePropertiesBean<TData> | 
 The interface of a bean for editing the properties of workflow nodes. 
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| INodePrototypeData<TData> | 
 The data that is used to create a new node when a node prototype is dragged into the workflow designer. 
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| INodePrototypeDescriptor<TData> | 
 A prototype for a workflow node that is shown in the drawer panel in the workflow designer. 
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| INodeWithName | 
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| IWorkflowNodeTypeProviding | 
 Marks the object as marking a certain workflow node type. 
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