docs: def _escape_filterargs(self, filterargs):
          """
          Escapes values in filterargs.
  
          filterargs is a value suitable for Django's string formatting operator
          (%), which means it's either a tuple or a dict. This return a new tuple
          or dict with all values escaped for use in filter strings.
  
          """
          if isinstance(filterargs, tuple):
              filterargs = tuple(self.ldap.filter.escape_filter_chars(value)
                                 for value in filterargs)
          elif isinstance(filterargs, dict):
              filterargs = dict((key, self.ldap.filter.escape_filter_chars(value))
                                for key, value in filterargs.items())
          else:
              raise TypeError("filterargs must be a tuple or dict.")
  
          return filterargs