code: def __repr__(self) -> str:
      return f"x: {self.x}\ny: {self.y}\nz: {self.z}"
  
imports: from typing import Optional, Tuple, Union, cast
  from kornia.core import Device, Dtype, Tensor, as_tensor, normalize, rand, stack
  from kornia.core.check import KORNIA_CHECK
  from kornia.core.tensor_wrapper import TensorWrapper, wrap
  from kornia.geometry.linalg import batched_dot_product, batched_squared_norm
label_desc: Use image node_id 2 for calling the Vector3 obj's underlying member method code with example usage: obj.__repr__() and returns: str, self, str, self, str, self