code: def prepack(self, namedstruct, skip_self=False, skip_sub=False):
          '''
          Run prepack
          '''
          if not skip_sub and self.header is not None and hasattr(self.header, 'fullprepack'):
              self.header.fullprepack(namedstruct._seqs[0])
          Parser.prepack(self, namedstruct, skip_self, skip_subf prepack(self, namedstruct, skip_self=False, skip_sub=False):
          '''
          Run prepack
          '''
          if not skip_sub and self.header is not None and hasattr(self.header, 'fullprepack'):
              self.header.fullprepack(namedstruct._seqs[0])
          Parser.prepack(self, namedstruct, skip_self, skip_sub)
docs: Run prepack