code: def predict_load_sample(self, metadata: Dict[str, str]):
      metadata, attr = self.load_sample(metadata, has_label=False)
      # hack to prevent manipulation of labels
      attr["split"] = "test"
      return metadata, attr
  
imports: import os
  from os.path import basename, dirname, exists, isdir, isfile, join
  from typing import Any, Dict, List, Optional, Type, Union
  import yaml
  from flash.core.data.io.input import BaseDataFormat, Input
  from flash.core.utilities.imports import _TOPIC_POINTCLOUD_AVAILABLE
label_desc: Use image node_id 7 for calling the KITTIPointCloudObjectDetectorLoader obj's underlying member method code with example usage: obj.predict_load_sample(metadata) and returns: metadata,  attr