code: def load_sample(self, index: int) -> Any:
      sample = self.dataset[index]
      return {
          DataKeys.INPUT: sample["data"],
          DataKeys.METADATA: sample["attr"],
      }
  
imports: from typing import Any
  from torch.utils.data import Dataset
  from flash.core.data.io.input import DataKeys, Input
label_desc: Use image node_id 2 for calling the PointCloudObjectDetectorDatasetInput obj's underlying member method code with example usage: obj.load_sample(index) and returns: dict