@SuppressWarnings("unused")
        public CasesBuilder<I, O> addCase(final TestCase<I, O> testCase) {
            Objects.requireNonNull(testCase);
            this.testCases.add(testCase);
            return this;
        }
Add a test case to the {@link DynamicTest} {@link Stream}.
stroom-test-common/src/main/java/stroom/test/common/DynamicTestBuilder.java