code: public static Channel intercept(Channel channel, ClientInterceptor... interceptors) {
      return intercept(channel, Arrays.asList(interceptors));
    }
docs: Create a new {@link Channel} that will call {@code interceptors} before starting a call on the
  given channel. The last interceptor will have its {@link ClientInterceptor#interceptCall}
  called first.
  
  @param channel the underlying channel to intercept.
  @param interceptors array of interceptors to bind to {@code channel}.
  @return a new channel instance with the interceptors applied.