code: @Override
    public boolean removeFailure(K key, V value, StoreAccessException e) {
      try {
        V loadedValue;
  
        try {
          loadedValue = loaderWriter.load(key);
        } catch (Exception e1) {
          throw ExceptionFactory.newCacheLoadingException(e1, e);
        }
  
        if (loadedValue == null) {
          return false;
        }
        if (!loadedValue.equals(value)) {
          return false;
        }
  
        try {
          loaderWriter.delete(key);
        } catch (Exception e1) {
          throw ExceptionFactory.newCacheWritingException(e1, e);
        }
        return true;
      } finally {
        cleanup(key, e);
      }
    }
docs: Delete the key from the loader-writer if it is found with a matching value.  Note that the load and write pair
  is not atomic. This atomicity, if needed, should be handled by the something else.
  
  @param key the key being removed
  @param value the value being removed
  @param e the triggered failure
  @return if the value was removed