def METHOD_NAME(self, container, reco):
    ''' Adds reconstructed quantities to container'''
    container['reco_coszen'] = np.cos(reco['zenith' + self.post_fix]).values.astype(FTYPE)
    container['reco_' + 'energy'] = reco['energy' + self.post_fix].values.astype(FTYPE)
    if self.post_fix == '_retro':
        container['pid'] = reco['L7_PIDClassifier_FullSky_ProbTrack'].values.astype(FTYPE)
    else:
        container['pid'] = reco['track' + self.post_fix].values.astype(FTYPE)
    return container