assertThat(out.get(0), CoreMatchers.instanceOf(NetconfHelloMessage.class));
final NetconfHelloMessage hello = (NetconfHelloMessage) out.get(0);
assertTrue(hello.getAdditionalHeader().isPresent());
assertThat(out.get(0), CoreMatchers.instanceOf(NetconfHelloMessage.class));
final NetconfHelloMessage hello = (NetconfHelloMessage) out.get(0);
assertTrue(hello.getAdditionalHeader().isPresent());