docs: def with_(self, replacement):
          """Provide replacement for string "needles".
  
          :param replacement: Target replacement for needles given in constructor
          :return: The :class:`Replacement` object
  
          :raise TypeError: If ``replacement`` is not a string
          :raise ReplacementError: If replacement has been already given
          """
          ensure_string(replacement)
          if is_mapping(self._replacements):
              raise ReplacementError("string replacements already provided")
  
          self._replacements = dict.fromkeys(self._replacements, replacement)
          return self