//   %divisor = arith.constant dense<...> : tensor<T>
//   %mean = "mhlo.divide"(%sum, %divisor)
class ConvertMeanOp
    : public GenericConvertReductionOp<ConvertMeanOp, TF::MeanOp, AddOp> {
 public:
  using GenericConvertReductionOp::GenericConvertReductionOp;
  static Value GetInitialValue(Type reduce_element_type, Location loc,
                               PatternRewriter *rewriter) {