code: public void clearCache(CacheInvocationContext<CacheRemove> context) {
          HystrixCacheKeyGenerator defaultCacheKeyGenerator = HystrixCacheKeyGenerator.getInstance();
          String cacheName = context.getCacheAnnotation().commandKey();
          HystrixGeneratedCacheKey hystrixGeneratedCacheKey =
                  defaultCacheKeyGenerator.generateCacheKey(context);
          String key = hystrixGeneratedCacheKey.getCacheKey();
          HystrixRequestCache.getInstance(HystrixCommandKey.Factory.asKey(cacheName),
                  HystrixConcurrencyStrategyDefault.getInstance()).clear(key);
      }
docs: Clears the cache for a given cacheKey context.
  
  @param context the runtime information about an intercepted method invocation for a method
  annotated with {@link CacheRemove} annotation