code: def dumps(self):
          
  
          head = self.documentclass.dumps() + '%\n'
          head += self.dumps_packages() + '%\n'
          head += dumps_list(self.variables) + '%\n'
          head += dumps_list(self.preamble) + '%\n'
  
          return head + '%\n' + super().dumps()
docs: Represent the document as a string in LaTeX syntax.
  
          Returns
          -------
          str