class_docstr: Base class for instanes that stack job estimators
docstr: Fitted status
docstr_tok: ["Fitted","status"]
code: def __fitted__(self):
      """Fitted status"""
      if not self.stack or not self._check_static_params():
          return False
      return all([g.__fitted__ for g in self.stack])
  
imports: import warnings
  from abc import abstractmethod
  import numpy
  from ._base_functions import check_stack, check_params
  from ..None import config
  from ..utils.exceptions import ParallelProcessingError
  from ..externals.sklearn.base import clone, BaseEstimator
label_desc: Use image node_id 7 for calling the BaseStacker obj's underlying member method code with example usage: obj.__fitted__() and returns: all, False