code: def __post_init__(self):
      assert (
          self.gflu_stages > 0
      ), "gflu_stages should be greater than 0"
      return super().__post_init__()
  
imports: from dataclasses import dataclass, field
  from pytorch_tabular.config import ModelConfig
label_desc: Use image node_id 1 for calling the GANDALFConfig obj's underlying member method code with example usage: obj.__post_init__() and returns: super