code: def parse_query(self, query):
          
          writer = self.writer
          if writer is None:
              raise GaugedUseAfterFreeError
          Gauged.writer_parse_query(writer, query)
          position = 0
          writer_contents = writer.contents
          size = writer_contents.buffer_size
          pointers = writer_contents.buffer
          while position < size:
              yield pointers[position], pointers[position+1]
              position += 2
docs: Parse a query string and return an iterator which yields
          (key, value)