code: def forward(self, input_pts, input_views=None):
      input_pts = self.pos_pe(input_pts)
      if input_views is not None:
          input_views = self.dir_pe(input_views)
      return self.nerf(input_pts, input_views)
  
imports: import torch
  import torch.nn
  import torch.nn.functional
  import numpy
label_desc: Use image node_id 2 for calling the Joiner obj's underlying member method code with example usage: obj.forward(input_pts, input_views) and returns: self