code: def _set_default_params(self):
      default_params = {"ensemble_size": 100}
      for param, val in default_params.items():
          self._set_default_param_value(param, val)
  
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 2 for calling the GreedyWeightedEnsembleModel obj's underlying member method code with example usage: obj._set_default_params() without return types