code: def forward(self, g):
      if self.features is not None:
          g.ndata["id"] = self.features
      for layer in self.layers:
          layer(g)
      return g.ndata.pop("h")
  
imports: import os
  from functools import partial
  import dgl
  import dgl.function
  import torch
  import torch.nn
  import torch.nn.functional
  from dgl import DGLGraph
label_desc: Use image node_id 7 for calling the Model obj's underlying member method code with example usage: obj.forward(g) and returns: g