`tf.reduce_join`: `reduction_indices` becomes `axis` * `tf.reduce_logsumexp`:
`reduction_indices` becomes `axis` * `tf.reduce_max`: `reduction_indices`
becomes `axis` * `tf.reduce_mean`: `reduction_indices` becomes `axis` *
`tf.reduce_min`: `reduction_indices` becomes `axis` * `tf.reduce_prod`:
`reduction_indices` becomes `axis` * `tf.reduce_sum`: `reduction_indices`

  auto x_shape = Shape(scope, x);
  auto output_shape = Shape(scope, op.output(0));

  // Reduce away broadcasted leading dims.
  auto reduce_x = internal::BroadcastGradientArgs(scope, x_shape, output_shape);
  auto gx_sum =
      ReduceSum(scope, gx, /*axis=*/reduce_x.r0, ReduceSum::KeepDims(true));
  auto gx_sum_reshape = Reshape(scope, gx_sum, x_shape);

  auto gy = SelectV2(scope, c, zeros, grad_inputs[0]);

  // gradients when perturbing each entry in the Tensor (which then
  // changes how many minima exist.)
  // Instead, we use a single input that broadcast-multiplies a larger
  // tensor with equal values, and apply reduce_min to the multiplied
  // result.
  TensorShape x_shape({1});
  auto x = Placeholder(scope_, DT_FLOAT, Placeholder::Shape(x_shape));
  auto all_same = Mul(scope_, Const(scope_, {1.f, 1.f, 1.f}), x);

    "SUM",
    "SQRT",
    "RSQRT",
    "SHAPE",
    "POW",
    "ARG_MIN",
    "FAKE_QUANT",
    "REDUCE_PROD",
    "REDUCE_MAX",
    "PACK",
    "LOGICAL_OR",
    "ONE_HOT",
    "LOGICAL_AND",
    "LOGICAL_NOT",
    "UNPACK",
    "REDUCE_MIN",
    "FLOOR_DIV",
    "REDUCE_ANY",
    "SQUARE",
    "ZEROS_LIKE",
    "FILL",
    "FLOOR_MOD",
    "RANGE",

    average_min_max_output = converted_model_average_min_max.signatures[
        'serving_default'
    ](input_tensor=sample_input)['output']

    def get_mean_square_error(x, y):
      ret = tensorflow.reduce_mean(tensorflow.square(tensorflow.subtract(x, y)))
      try:
        ret = ret.numpy()
      except AttributeError:
        ret = ret.eval()
      return ret