def subscribers(options = {})
      load
      return [] if info['push'].nil? || info['push']['subscribers'].nil?

      info['push']['subscribers'].map { |s| Subscriber.new(s, self, options) }
    end
def subscribers(options = {})
      load
      return [] if info['push'].nil? || info['push']['subscribers'].nil?

      info['push']['subscribers'].map { |s| Subscriber.new(s, self, options) }
    end
`options` was kept for backward compatibility