public Builder testCases(List<EndpointTestCase> testCases) {
            this.testCases.clear();
            this.testCases.get().addAll(testCases);
            return this;
        }
Describes test cases for validating an endpoint rule-set.
smithy-rules-engine/src/main/java/software/amazon/smithy/rulesengine/traits/EndpointTestsTrait.java