code: def inline_map_reduce(self, map, reduce, full_response=False, **kwargs):
          
          cmd = SON([("mapreduce", self.__name),
                     ("map", map),
                     ("reduce", reduce),
                     ("out", {"inline": 1})])
          collation = validate_collation_or_none(kwargs.pop('collation', None))
          cmd.update(kwargs)
          with self._socket_for_reads() as (sock_info, slave_ok):
              if sock_info.max_wire_version >= 4 and 'readConcern' not in cmd:
                  res = self._command(sock_info, cmd, slave_ok,
                                      read_concern=self.read_concern,
                                      collation=collation)
              else:
                  res = self._command(sock_info, cmd, slave_ok,
                                      collation=collation)
  
          if full_response:
              return res
          else:
              return res.get("results")
docs: Perform an inline map/reduce operation on this collection.
  
          Perform the map/reduce operation on the server in RAM. A result
          collection is not created. The result set is returned as a list
          of documents.
  
          If `full_response` is ``False`` (default) returns the
          result documents in a list. Otherwise, returns the full
          response from the server to the `map reduce command`_.
  
          The :meth:`inline_map_reduce` method obeys the :attr:`read_preference`
          of this :class:`Collection`.
  
          :Parameters:
            - `map`: map function (as a JavaScript string)
            - `reduce`: reduce function (as a JavaScript string)
            - `full_response` (optional): if ``True``, return full response to
              this command - otherwise just return the result collection
            - `**kwargs` (optional): additional arguments to the
              `map reduce command`_ may be passed as keyword arguments to this
              helper method, e.g.::
  
              >>> db.test.inline_map_reduce(map, reduce, limit=2)
  
          .. versionchanged:: 3.4
             Added the `collation` option.