code: @Override
      protected void sideEffectRequestToCancel(final BinaryRequest request) {
          super.sideEffectRequestToCancel(request);
  
          if (request instanceof BinaryStoreRequest) {
              ((BinaryStoreRequest) request).content().release();
          } else if (request instanceof AppendRequest) {
              ((AppendRequest) request).content().release();
          } else if (request instanceof PrependRequest) {
              ((PrependRequest) request).content().release();
          }
      }
docs: Releasing the content of requests that are to be cancelled.
  
  @param request the request to side effect on.