code: async def container_size(self, container_len=None, container_type=None, params=None):
          
          if hasattr(container_type, 'boost_serialize'):
              raise ValueError('not supported')
  
          if self.writing:
              await dump_uvarint(self.iobj, container_len)
              if not container_is_raw(container_type, params):
                  c_elem = x.container_elem_type(container_type, params)
                  c_ver = TypeWrapper(c_elem)
                  await dump_uvarint(self.iobj, self._cur_version(c_ver))  # element version
  
              if container_type.FIX_SIZE and container_len != container_type.SIZE:
                  raise ValueError('Fixed size container has not defined size: %s' % container_type.SIZE)
  
          else:
              raise ValueError('Not supported')
docs: Container size
          :param container_len:
          :param container_type:
          :param params:
          :return: