code: def mergetensor(tbl):
      sz = [len(tbl)] + list(tbl[0].size())
      res = tbl[0].new(torch.Size(sz))
      for i, v in enumerate(tbl):
          res[i].copy_(v)
      return res
  
label_desc: Use image node_id 2 for calling a global function with example usage: mergetensor(tbl) and returns: res