Method: LOAD_MODEL
Method: CREATE_OPERATION
Method: GET_KEY_FROM_RT_NODE
Method: GET_QUERY_RESULT_NEW
Method: CREATE_SOURCE_TREE
Method: CREATE_CHILD_TREE
Method: ADD_QUERY_TREE_TO_TARGET_NODE
Method: CREATE_TARGET_ROOT_NODE
Method: ADD_KEYFIELD_TO_NODE
Method: ADD_FIELDS_TO_TARGET_NODE
Method: ADD_STRUC_TO_TARGET_NODE
Method: ADD_SOURCE_TREE_TO_TARGET_NODE