Method: STORE_NEW_DOCUMENT
Method: GET_USER_HISTORIES
Method: DELETE_SINGLE_HISTORY
Method: DELETE_QUERY_HISTORIES
Method: GET_HISTORY
Method: READ_HISTORY
Method: UPDATE_HISTORY
Method: REGISTER_INSTANCE
Method: CONSTRUCTOR
Method: GET_INSTANCE
Method: ADD_HISTORY
Method: DELETE_HISTORY
Method: GET_INSTANCE_FROM_DIRECTORY