def __init__(self, signatory):
        self.signatory = signatory
Create new results instance with specified covariance estimator as
dataset/ETHPy150Open CollabQ/CollabQ/openid/server/server.py/SigningEncoder.__init__--crossover with--dataset/ETHPy150Open statsmodels/statsmodels/statsmodels/tsa/statespace/mlemodel.py/MLEResults._get_robustcov_results