Method: CREATE_TOPIC
Method: MOVE_TOPIC
Method: MOVE_TOPIC_LEFT
Method: MOVE_TOPIC_RIGHT
Method: DELETE_TOPIC_HIERARCHY
Method: SORT_TOPICS_BY_NAME
Method: INITIALIZE_TOPIC_STRUCTURE
Method: MOVE_TOPIC_UPWARD
Method: COPY_TOPIC
Method: MOVE_TOPIC_DOWNWARD
Method: INSERT_STRUCTURE
Method: UPDATE_STRUCTURE
Method: UPDATE_STRUCTURE_BY_TOPICID
Method: MOVE_STRUCTURE