Method: GET_PARENT
Method: CONSTRUCTOR
Method: GET_MESSAGE
Method: GET_SEVERITY
Method: SET_SEVERITY
Method: SET_PARENT
Method: GET_FIRST_CHILD_TASK
Method: ADD_CHILD
Method: SET_INSERT_IDX_AFTER_TASK
Method: SET_INSERT_IDX_BEFORE_FRST_TSK
Method: IS_LEAF
Method: GET_MESSAGES
Method: GET_TASK_KEY
Method: GET_LOG_DATA_FROM_DB
Method: DESERIALZE_FROM_LOG