.then().expect().statusCode(Status.NO_CONTENT.getStatusCode())
.when().post(MESSAGE_URL);
verify(runtimeServiceMock).createMessageCorrelation(eq(messageName));
verify(messageCorrelationBuilderMock).processInstanceBusinessKey(eq((String) null));
verify(messageCorrelationBuilderMock).setVariables(argThat(new EqualsMap(null)));
verify(messageCorrelationBuilderMock).correlate();
// verify(runtimeServiceMock).correlateMessage(eq(messageName), eq((String) null),
// argThat(new EqualsMap(null)), argThat(new EqualsMap(null)));
}