code: def selections_group(self):
          
          cmd.group('Structures', '%s %s %sCartoon' % (self.protname, self.ligname, self.protname))
          cmd.group('Interactions', 'Hydrophobic HBonds HalogenBonds WaterBridges PiCation PiStackingP PiStackingT '
                                    'Saltbridges MetalComplexes')
          cmd.group('Atoms', '')
          cmd.group('Atoms.Protein', 'Hydrophobic-P HBondAccept-P HBondDonor-P HalogenAccept Centroids-P PiCatRing-P '
                                     'StackRings-P PosCharge-P NegCharge-P AllBSRes Chargecenter-P  Metal-P')
          cmd.group('Atoms.Ligand', 'Hydrophobic-L HBondAccept-L HBondDonor-L HalogenDonor Centroids-L NegCharge-L '
                                    'PosCharge-L NegCharge-L ChargeCenter-L StackRings-L PiCatRing-L Metal-L Metal-M '
                                    'Unpaired-HBA Unpaired-HBD Unpaired-HAL Unpaired-RINGS')
          cmd.group('Atoms.Other', 'Water Metal-W')
          cmd.order('*', 'y')
docs: Group all selections