262     def _free_multi(self, how, values):  argument
277                 self._free_range(how, val, highval)
279     def _maybe_increase_max(self, how, val):  argument
290         raise ValueError('{0}: {1} is outside range limit'.format(how, val))
292     def _maybe_decrease_min(self, how, val):  argument
303         raise ValueError('{0}: {1} is outside range limit'.format(how, val))
305     def _free_range(self, how, val, highval):  argument
316             raise ValueError('{0}: {1} already available'.format(how, val))
322                                  'available'.format(how, val, highval))
348                 self._maybe_increase_max(how, highval)
353                 self._maybe_decrease_min(how, val)
357                 self._maybe_decrease_min(how, val)
358                 self._maybe_increase_max(how, highval)