code: def forward(self, data):
      return self._conv.forward(data)
  
imports: import torch
  import torch.nn.functional
  from torch_geometric.nn import MessagePassing
  from torch_points3d.core.spatial_ops import *
  from torch_points3d.core.base_conv.message_passing import *
label_desc: Use image node_id 2 for calling the RandLANetRes obj's underlying member method code with example usage: obj.forward(data) and returns: self