code: def remove_marshaller(self, marshallers):
          
          if not isinstance(marshallers, collections.Iterable):
              marshallers = [marshallers]
          for m in marshallers:
              if m in self._user_marshallers:
                  self._user_marshallers.remove(m)
          self._update_marshallers()
docs: Removes a marshaller/s from the user provided list.
  
          Removes a marshaller or a list of them from the user provided set
          of marshallers.
  
          Parameters
          ----------
          marshallers : marshaller or list of marshallers
              The user marshaller/s to from the user provided collection.