adding new node in hierarcy type in workflow

class: WorkflowHierarchyProviderHelper  for convert nodetype 

[ExtensionOf(classstr(WorkflowHierarchyProviderHelper))]

public  final class testWorkflowHierarchyProviderHelper_Extension

{

    public anytype convertToNodeDataType(extendedDataTypeName _dataType, anytype _value, WorkflowContext _workflowContext)

    {

        HcmPersonnelNumberId    personnelNumberId;

        const extendedDataTypeName ProjResponsibleFinancialWorker = 'ProjResponsibleFinancialWorker';

        const extendedDataTypeName PurchReqPreparerRefRecId       = 'PurchReqPreparerRefRecId';

        if (_dataType == ProjResponsibleFinancialWorker)

        {

            _dataType = PurchReqPreparerRefRecId;

        }

        personnelNumberId = next convertToNodeDataType(_dataType, _value, _workflowContext);

        if (_dataType == ProjResponsibleFinancialWorker)

        {

            _dataType = ProjResponsibleFinancialWorker;

        }

        return personnelNumberId;

    }

}

class: WorkflowHierarchyProviderHelperEventHandler for adding node "Controller"

public final class TestWorkflowHierarchyProviderHelperEventHandler

{

    [SubscribesTo(classstr(WorkflowHierarchyProviderHelper), delegatestr(WorkflowHierarchyProviderHelper, addAdditonalSupportedDataTypesDelegate))]

    static void addAdditonalSupportedDataTypesDelegate(Set _supportedDataTypes)

    {

        _supportedDataTypes.add(extendedTypeStr(ProjResponsibleFinancialWorker));

    }

}