.build();
HttpResponse createResponse = HttpResponse.builder().statusCode(200)
.payload(payloadFromResourceWithContentType("/create_instance.xml", "text/xml")).build();
RDSApi apiWhenExist = requestSendsResponse(create, createResponse);
apiWhenExist.getInstanceApi().create("SimCoProd01", InstanceRequest.builder()
.engine("mysql")
.masterUsername("master")
.masterPassword("Password01")
.allocatedStorageGB(5)
.instanceClass("db.t1.micro").build());