Calculate the stability classification for this case.

def compute_stability_classification(self, predicted_data, record, dataframe_record):
        '''Calculate the stability classification for this case.'''
        stability_classification, stability_classication_x_cutoff, stability_classication_y_cutoff = None, self.stability_classication_x_cutoff, self.stability_classication_y_cutoff
        if record['DDG'] != None:
            stability_classification = fraction_correct([record['DDG']], [predicted_data[self.ddg_analysis_type]], x_cutoff = stability_classication_x_cutoff, y_cutoff = stability_classication_y_cutoff)
            stability_classification = int(stability_classification)
            assert(stability_classification == 0 or stability_classification == 1)
        dataframe_record['StabilityClassification'] = stability_classification