code: def _reset(self, name=None):
          
          if name is None:
              for key in self._props:
                  if isinstance(self._props[key], basic.Property):
                      self._reset(key)
              return
          if name not in self._props:
              raise AttributeError("Input name '{}' is not a known "
                                   "property or attribute".format(name))
          if not isinstance(self._props[name], basic.Property):
              raise AttributeError("Cannot reset GettableProperty "
                                   "'{}'".format(name))
          if name in self._defaults:
              val = self._defaults[name]
          else:
              val = self._props[name].default
          if callable(val):
              val = val()
          setattr(self, name, val)
docs: Revert specified property to default value
  
          If no property is specified, all properties are returned to default.