boolean function ( ) { return cursor + 1 < mementoStateHistory . size ( ) ; }
gets the status of the redo command . concode_field_sep int cursor concode_elem_sep ArrayList<Memento> mementoStateHistory concode_elem_sep int maxHistorySize concode_field_sep void undo concode_elem_sep boolean isUndo concode_elem_sep void redo concode_elem_sep void addState