code: def get_doc(self, name):
          
  
          # Create one if there isn't one already
          if name not in self._docs:
              self._docs[name] = rules.RuleDoc(name)
  
          return self._docs[name]
docs: Retrieve a ``RuleDoc`` object from the ``Policy`` with the
          given name.  The ``RuleDoc`` object contains all documentation
          for the named rule.
  
          :param name: The name of the rule to retrieve the
                       documentation for.
  
          :returns: A ``RuleDoc`` object containing the documentation
                    for the rule.