def get_service_calls_for_transform_stages(self):
    first_timestamps = self.get_first_timestamps_for_service_calls()
    first_incidents_to_be_reported = first_timestamps[(pd.isnull(first_timestamps.first_incident_timestamp) & (~ pd.isnull(first_timestamps.first_model_train_timestamp)))]
    regular_service_calls = first_timestamps[(~ pd.isnull(first_timestamps.first_incident_timestamp))]
    return (regular_service_calls, first_incidents_to_be_reported)
def get_service_calls_for_transform_stages(self):
    first_timestamps = self.get_first_timestamps_for_service_calls()
    first_incidents_to_be_reported = first_timestamps[(pd.isnull(first_timestamps.first_incident_timestamp) & (~ pd.isnull(first_timestamps.first_model_train_timestamp)))]
    regular_service_calls = first_timestamps[(~ pd.isnull(first_timestamps.first_incident_timestamp))]
    return (regular_service_calls, first_incidents_to_be_reported)