OkHttpProtocolNegotiator { public static OkHttpProtocolNegotiator get() { return NEGOTIATOR; } @VisibleForTesting  OkHttpProtocolNegotiator(Platform platform); static OkHttpProtocolNegotiator get(); String negotiate(
      SSLSocket sslSocket, String hostname, @Nullable List<Protocol> protocols); String getSelectedProtocol(SSLSocket socket);  }
@Test public void negotiatorNotNull() { assertNotNull(OkHttpProtocolNegotiator.get()); }