Method: BUILD_NEXT_LEVEL
Method: BUILD_NEXT_LEVEL_OLD
Method: SORT_LEVEL
Method: GET_MILESTONES
Method: RETRIEVE_ALV_DATA
Method: GET_DETAIL_DATA
Method: GET_NEXT_LEVEL
Method: GET_RELATIONSHIPS
Method: GET_ALL_SUB_OBJECTS
Method: GET_NEXT_LEVEL_OLD
Method: TASKDETAILSET_UPDATE_ENTITY