code: def _string_put_transform(cls, item, **kwargs):
          '''
          transfrom for a REG_SZ to properly handle "Not Defined"
          '''
          if isinstance(item, six.string_types):
              if item.lower() == 'not defined':
                  return None
              else:
                  return itef _string_put_transform(cls, item, **kwargs):
          '''
          transfrom for a REG_SZ to properly handle "Not Defined"
          '''
          if isinstance(item, six.string_types):
              if item.lower() == 'not defined':
                  return None
              else:
                  return item
docs: transfrom for a REG_SZ to properly handle "Not Defined"