code: def __getitem__(self, idx):
      data = self.data[idx]
      targets = self.targets[idx]
      return {
          "x": torch.tensor(data, dtype=self.dtypes[0]),
          "y": torch.tensor(targets, dtype=self.dtypes[1]),
      }
  
imports: import torch
label_desc: Use image node_id 3 for calling the GenericDataset obj's underlying member method code with example usage: obj.__getitem__(idx) and returns: dict