@Test
public void testConvertFromMessageBasic() throws Exception {

    final HttpResponse response = new BasicHttpResponse(200);
    response.addHeader("custom123", "Value");
    final DefaultH2ResponseConverter converter = new DefaultH2ResponseConverter();
    final List<Header> headers = converter.convert(response);
    Assert.assertNotNull(headers);
    Assert.assertEquals(2, headers.size());
    final Header header1 = headers.get(0);
    Assert.assertEquals(":status", header1.getName());
    Assert.assertEquals("200", header1.getValue());
    final Header header2 = headers.get(1);
    Assert.assertEquals("custom123", header2.getName());
    Assert.assertEquals("Value", header2.getValue());
}