Method: FILL_FLAT_TREE_COLUMN
Method: ADD_RELATIONS
Method: ADD_ROW_IDS_TO_BUFFER
Method: REMOVE
Method: REFRESH
Method: EXPAND
Method: EXPAND_SUBTREE
Method: SET_MT_SELECTION
Method: BUILD_NEXT_LEVEL_OLD
Method: COLLAPSE_SUBTREE
Method: COLLAPSE
Method: COPY_NEXT_LEVEL
Method: IS_ENTRY_OBJECT
Method: BUILD_NEXT_LEVEL
Method: BUILD_TREE_REFRESH
Method: INSERT_NEXT_LEVEL_INTO_TABLE
Method: BUILD_TREE_INIT
Method: GET_ELEMENT