What is the replacement of GDscript for Basis.z/y/z?

Godot Version

4.2.1 windows

Question

I have code in GD script which i like to replace :
//node3d + vec3d y
camguide.transform.basis.z + vec2d.y

in c++ i can’t find any replacement for basis.z , how can i get it so it will act as in gd script ?

Rusty mathematics here but I think godot-cpp implements them as indexable

// x y z
// 0 1 2
camguide.get_transform().basis[1] + vec2d.y

Snippet of the Basis definition

struct _NO_DISCARD_ Basis {
	Vector3 rows[3] = {
		Vector3(1, 0, 0),
		Vector3(0, 1, 0),
		Vector3(0, 0, 1)
	};

	_FORCE_INLINE_ const Vector3 &operator[](int axis) const {
		return rows[axis];
	}