WF_RUN with Project Name, Workflow Name, and Node Name

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

FUNCTION WF_RUN(P_PROJECT_NAME IN VARCHAR2,
                                P_WORKFLOW_NAME IN VARCHAR2,
                                P_NODE_NAMES IN ODMR_OBJECT_NAMES,
                                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 VARCHAR2