class_docstr: PlaceholderGenerator is a generic class to generate strategies for placeholder node.
code: def validate(self) -> bool:
      return super().validate()
  
file_path: colossalai/colossalai/auto_parallel/tensor_shard/node_handler/strategy/getattr_generator.py
imports: from typing import List
  from colossalai.auto_parallel.tensor_shard.sharding_strategy import MemoryCost, ShardingStrategy, TrainCycleItem
  from colossalai.auto_parallel.tensor_shard.utils import enumerate_all_possible_1d_sharding, enumerate_all_possible_2d_sharding, ignore_sharding_exception
  from colossalai.tensor.sharding_spec import ShardingSpecException
  from .strategy_generator import StrategyGenerator
label_desc: Use image node_id 1 for calling the GetattrGenerator obj's underlying member method code with example usage: obj.validate() and returns: super