builder->create<mhlo::ReturnOp>(loc, compare);
  }

  {
    OpBuilder::InsertionGuard guard(*builder);

    // Build up the only block in the body region.
    Region &body = while_op.getBody();
    Block *block = builder->createBlock(&body);
    block->addArguments(init_types_with_loop_iv,
                        SmallVector<Location>(ivs_count, loc));

	if req.Body == nil || req.Body == NoBody {
		return req, nil
	}

	// If the request body can be reset back to its original
	// state via the optional req.GetBody, do that.
	if req.GetBody != nil {
		body, err := req.GetBody()
		if err != nil {
			return nil, err
		}
		newReq := *req
		newReq.Body = body
		return &newReq, nil
	}