assertion.validate(stdout.toString(), "stdout")
        assertion.validate(stderr.toString(), "stderr")
        true
    }

    def <T> T loadToolingModel(Class<T> modelClass, @DelegatesTo(ModelBuilder<T>) Closure cl = {}) {
        def result = loadToolingLeanModel(modelClass, cl)
        assertHasConfigureSuccessfulLogging()
        validateOutput()
        return result