code: def to(self, device: Device):
      # Manually move to device modules which are not subclasses of nn.Module
      cameras = self.cameras
      if cameras is not None:
          self.cameras = cameras.to(device)
      self.materials = self.materials.to(device)
      self.lights = self.lights.to(device)
      return self
  
imports: import warnings
  from typing import Optional
  import torch
  import torch.nn
  from ...common.datatypes import Device
  from ...structures.meshes import Meshes
  from ..blending import BlendParams, hard_rgb_blend, sigmoid_alpha_blend, softmax_rgb_blend
  from ..lighting import PointLights
  from ..materials import Materials
  from ..splatter_blend import SplatterBlender
  from ..utils import TensorProperties
  from .rasterizer import Fragments
  from .shading import _phong_shading_with_pixels, flat_shading, gouraud_shading, phong_shading
label_desc: Use image node_id 3 for calling the ShaderBase obj's underlying member method code with example usage: obj.to(device) and returns: self