code: def uniquenessRatio(self, value):
          
          if value >= 5 and value <= 15:
              self._uniqueness = value
          else:
              raise InvalidUniquenessRatioError("Uniqueness ratio must be "
                                                "between 5 and 15.")
          self._replace_bm()
docs: Set private ``_uniqueness`` and reset ``_block_matcher``.