WF_RUN with Project ID, Workflow ID and Node IDs

The WF_RUN function with the project ID, workflow ID and node ID parameters:

FUNCTION WF_RUN(P_PROJECT_ID IN NUMBER,
                                 P_WORKFLOW_ID IN NUMBER,
                                 P_NODE_IDS IN ODMR_OBJECT_IDS,
                                 P_RUN_MODE IN VARCHAR2 DEFAULT 'RUN_NODE_ONLY',
                                 P_MAX_NUM_THREADS IN NUMBER DEFAULT NULL,
                                 P_SCHEDULE IN VARCHAR2 DEFAULT NULL,
                                 P_JOB_CLASS IN VARCHAR2 DEFAULT NULL)
RETURN VARCHAR