code: def per_sample_transform(self) -> Callable:
      return PyGTransformAdapter(NormalizeFeatures())
  
file_path: lightning-flash/src/flash/graph/classification/input_transform.py
imports: from dataclasses import dataclass
  from typing import Any, Callable, Dict
  from flash.core.data.io.input import DataKeys
  from flash.core.data.io.input_transform import InputTransform
  from flash.core.data.utilities.samples import to_sample
  from flash.core.utilities.imports import _TOPIC_GRAPH_AVAILABLE
  from flash.graph.collate import _pyg_collate
label_desc: Use image node_id 2 for calling the GraphClassificationInputTransform obj's underlying member method code with example usage: obj.per_sample_transform() and returns: PyGTransformAdapter