docs: def args2body(self, parsed_args, body=None):
          """Add in conditional args and then return all conn info."""
  
          if body is None:
              body = {}
          if parsed_args.dpd:
              vpn_utils.validate_dpd_dict(parsed_args.dpd)
              body['dpd'] = parsed_args.dpd
          if parsed_args.local_ep_group:
              _local_epg = neutronv20.find_resourceid_by_name_or_id(
                  self.get_client(), 'endpoint_group',
                  parsed_args.local_ep_group)
              body['local_ep_group_id'] = _local_epg
          if parsed_args.peer_ep_group:
              _peer_epg = neutronv20.find_resourceid_by_name_or_id(
                  self.get_client(), 'endpoint_group',
                  parsed_args.peer_ep_group)
              body['peer_ep_group_id'] = _peer_epg
          return {self.resource: body}