@property<EOL><INDENT>def ndxlist(self):<DEDENT>
return [{'<STR_LIT:name>': name, '<STR_LIT>': len(atomnumbers), '<STR_LIT>': nr+<NUM_LIT:1>} for<EOL>nr,(name,atomnumbers) in enumerate(self.items())]<EOL>
Return a list of groups in the same format as  :func:`gromacs.cbook.get_ndx_groups`.

        Format:
           [ {'name': group_name, 'natoms': number_atoms, 'nr':  # group_number}, ....]