interpolator.addValueSource(vs);
        }
        for (InterpolationPostProcessor postProcessor : postProcessors) {
            interpolator.addPostProcessor(postProcessor);
        }
        final RecursionInterceptor recursionInterceptor = createRecursionInterceptor(config);
        return value -> {
            if (value != null && value.contains("${")) {
                String c = cache.get(value);
                if (c == null) {

            }
        }
    }

    private static class PostProcessors implements BuildOperationTracker {
        private final List<OperationResultPostProcessor> processors;

        public PostProcessors(List<OperationResultPostProcessor> processors) {
            this.processors = processors;
        }

        @Override

        operationDependenciesResolver.addLookup(transformOperationMapper);

        List<OperationResultPostProcessor> postProcessors = createPostProcessors(subscriptions, consumer);

        TaskOperationMapper taskOperationMapper = new TaskOperationMapper(postProcessors, taskOriginTracker, operationDependenciesResolver);
        operationDependenciesResolver.addLookup(taskOperationMapper);

//     and create a Placeholder node as dst node's input.
Status PreprocessEdgesBetweenOutsideCompilations(
    Graph* g, const string& outside_compilation_attr_name);

// Postprocesses edges within the same XLA cluster. This function reverts what
// `PreprocessEdgesBetweenOutsideCompilations` did. It will perform the
// following operations in order:
//

// each explored sub-index and sub-property during validation.
//
// It's main job is to keep the old/new values correlated as the traversal
// continues, and postprocess errors according to our ratcheting policy.
//
// ratchetingValueValidator is not thread safe.
type ratchetingValueValidator struct {
	// schemaArgs provides the arguments to use in the temporary SchemaValidator