public Builder expectation(Expectation expectation) {
            this.expectation = expectation;
            return this;
        }
Sets the expected response of the service call for the test case.

@param expectation Expected response of the service call.
@return Returns the builder.
smithy-smoke-test-traits/src/main/java/software/amazon/smithy/smoketests/traits/SmokeTestCase.java