def METHOD_NAME(self):
    """Get fitted parameters.
    private _get_fitted_params, called from get_fitted_params
    State required:
        Requires state to be "fitted".
    Returns
    -------
    fitted_params : dict with str keys
        fitted parameters, keyed by names of fitted parameter
    """
    estimator = self._get_delegate()
    return estimator.get_fitted_params()