REFERENCE(MODEL) TYPE REF TO CL_PMEVC_ENGINE_MODEL
REFERENCE(IO_MODEL) TYPE REF TO CL_PMEVC_ENGINE_MODEL
REFERENCE(IR_MODEL) TYPE REF TO CL_PMEVC_ENGINE_MODEL
REFERENCE(ENGINE_MODEL) TYPE REF TO CL_PMEVC_ENGINE_MODEL
REFERENCE(IV_MODEL) TYPE REF TO CL_PMEVC_ENGINE_MODEL