void captureBuildOperations() {
        if (operations == null) {
            operations = new BuildOperationsFixture(executer, temporaryFolder)
        }
    }

    private void ensureInitialized() {
        if (operations == null) {
            throw new IllegalStateException("Make sure to call `captureBuildOperations` before using methods that work on captured operations.")
        }
    }

        }

        @Override
        public String getSimpleClassName() {
            ensureInitialized();
            return className;
        }

        @Override
        public String getSource() {
            ensureInitialized();
            return source;
        }

        private void ensureInitialized() {
            if (className == null) {
                StringWriter writer = new StringWriter();