for _, kv := range setOverlay {
		kvv := strings.Split(kv, "=")
		if len(kvv) != 2 {
			return "", fmt.Errorf("bad argument %s: expect format key=value", kv)
		}
		k := kvv[0]
		v := util.ParseValue(kvv[1])
		if err := tpath.WriteNode(tree, util.PathFromString(k), v); err != nil {
			return "", err
		}
		// To make errors more user friendly, test the path and error out immediately if we cannot unmarshal.

    *   `LinearOperator.matmul` now returns a new `LinearOperator`.
*   New ops and improved op functionality
    *   Add a Nearest Neighbor Resize op.
    *   Add an `ignore_unknown` argument to `parse_values` which suppresses
        ValueError for unknown hyperparameter types. Such * Add
        `tf.linalg.matvec` convenience function.
    *   `tf.einsum()`raises `ValueError` for unsupported equations like