returns the result of interpreting the object as an instance of ` activity execution ' . this implementation returns null ; returning a non-null result will terminate the switch . concode_field_sep WarehouseoperationPackage modelPackage concode_field_sep T caseTransformationExecution concode_elem_sep T caseModelElement concode_elem_sep T caseStepExecution concode_elem_sep T caseChangeRequest concode_elem_sep T doSwitch concode_elem_sep T doSwitch concode_elem_sep T doSwitch concode_elem_sep T caseElement concode_elem_sep T defaultCase concode_elem_sep T caseMeasurement
T function ( ActivityExecution arg0 ) { return null ; }