### Question:
WampMessageMethodArgumentResolver implements HandlerMethodArgumentResolver { @Override public Object resolveArgument(MethodParameter parameter, Message<?> message) throws Exception { return message; }  @Override boolean supportsParameter(MethodParameter parameter); @Override Object resolveArgument(MethodParameter parameter, Message<?> message);  }### Answer:
@Test public void resolveArgumentTest() throws Exception { CallMessage callMessage = new CallMessage(1, "call"); assertThat(this.resolver.resolveArgument(this.messageParameter, callMessage)) .isEqualTo(callMessage); }