code: def _get_default_ag_args(cls) -> dict:
      default_ag_args = super()._get_default_ag_args()
      extra_ag_args = {"valid_base": False}
      default_ag_args.update(extra_ag_args)
      return default_ag_args
  
imports: import logging
  from autogluon.common.features.types import S_STACK
  from ...constants import MULTICLASS, QUANTILE, SOFTCLASS
  from ..abstract.abstract_model import AbstractModel
  from .ensemble_selection import EnsembleSelection, SimpleWeightedEnsemble
label_desc: Use image node_id 13 for calling the GreedyWeightedEnsembleModel obj's underlying member method code with example usage: obj._get_default_ag_args(cls) and returns: default_ag_args