returns the name of this command . this can be the field , function or query grouped by . concode_field_sep String _name concode_elem_sep Integer _ngroups concode_elem_sep int _matches concode_elem_sep List<Group> _values concode_field_sep void add concode_elem_sep Integer getNGroups concode_elem_sep List<Group> getValues concode_elem_sep int getMatches
String function ( ) { return _name ; }