def get_multiple_model_method(model):

    """
    It returns the name of the Multiple Model Chain element of the model.

    Parameters
    ----------
    model :
        A Scikit-learn model instance

    Returns
    -------
    The multiple model method for a mining model.
        
    """
    if model.__class__.__name__ == 'GradientBoostingClassifier':
        return 'modelChain'
    elif model.__class__.__name__ == 'GradientBoostingRegressor':
        return 'sum'
    elif model.__class__.__name__ == 'RandomForestClassifier':
        return 'majorityVote'
    elif model.__class__.__name__ in ['RandomForestRegressor','IsolationForest']:
        return 'average'