'Get the current quota in number of files. None if it is unset'

@_coerce_exceptions
def get_namespace_quota(self, path):

    path = encode_fs_path(path)
    file_count_quota = self.nn_client.getContentSummary(self.request_context, normpath(path)).quota
    if ((file_count_quota == QUOTA_RESET) or (file_count_quota == QUOTA_DONT_SET)):
        return None
    else:
        return file_count_quota
