code: def dumps_content(self, **kwargs):
          r
  
          return dumps_list(self, escape=self.escape,
                            token=self.content_separator, **kwargs)
docs: r"""Represent the container as a string in LaTeX syntax.
  
          Args
          ----
          \*\*kwargs:
              Arguments that can be passed to `~.dumps_list`
  
  
          Returns
          -------
          string:
              A LaTeX string representing the container