code: def forward(self, features):
      h = features
      for layer in self.layers:
          h = layer(h)
      return h
  
file_path: dgl/examples/mxnet/gcn/gcn_mp.py
imports: import mxnet
  from mxnet import gluon
label_desc: Use image node_id 2 for calling the GCN obj's underlying member method code with example usage: obj.forward(features) and returns: h