@Test
  public void noResponseBodyForPatch() {
    server.enqueue(new MockResponse());

    TestInterface api =
        newBuilder().target(TestInterface.class, "http://localhost:" + server.getPort());

    api.noPatchBody();
  }
Some client implementation tests should override this test if the PATCH operation is
unsupported.
core/src/test/java/feign/client/AbstractClientTest.java