Method: HC_BUILD_ROLES_TREE
Method: HC_LOAD_ALL_CHILDREN
Method: CONVERT_TREE_DATA
Method: UPDATE_VISIBLE_TREE_GANTT
Method: INSERT_NEXT_LEVEL_INTO_TABLES
Method: BUILD_TREE
Method: ON_UPDATE_OPT
Method: COLLAPSE
Method: BUILD_TREE_BOTTOM_UP
Method: INSERT_NEXT_LEVEL_INTO_TABLE
Method: GET_VISIBLE_TREE_ELEMENTS
Method: EXPAND
Method: UPDATE_NEXT_LEVEL
Method: GET_LOADED_TREE_ELEMENTS
Method: GET_LAST_VISIBLE_SUBTREE
Method: GET_COMPARISON_STRUCTURE