'Updates a bucket\'s storage class.'

def set_storage_class(self, storage_class, validate=False, headers=None):

    self._check_bucket_uri('set_storage_class')
    if (self.scheme != 'gs'):
        raise ValueError(('set_storage_class()    not    supported    for    %s    URIs.' % self.scheme))
    bucket = self.get_bucket(validate, headers)
    bucket.set_storage_class(storage_class, headers)
