// TODO: If this pattern comes up more frequently, consider adding core
    // support for failable rewrites.
    if (failableRewrite(op, rewriter)) {
      *hadFailure = true;
      return failure();
    }
    return success();
  }

 private:
  bool *hadFailure;

  bool failableRewrite(FakeQuantOp op, PatternRewriter &rewriter) const {
    auto converter = ExpressedToQuantizedConverter::forInputType(op.getType());