code: def forward(self, batch):
      batch.node_feature = self.model(
          batch.node_feature, batch.edge_index
      )
      return batch
  
imports: import torch
  import torch.nn
  import torch.nn.functional
  from torch.nn import Parameter
  from torch_geometric.nn.conv import MessagePassing
  from torch_geometric.nn.inits import glorot, zeros
  from torch_geometric.utils import add_remaining_self_loops, softmax
  from torch_scatter import scatter_add
  from graphgym.config import cfg
  from graphgym.register import register_layer
label_desc: Use image node_id 2 for calling the GeneralMulAttConv obj's underlying member method code with example usage: obj.forward(batch) and returns: batch