security: move most methods to private

models/queue_job_batch.py

@@ -46,4 +46,4 @@ class QueueJobBatch(models.Model):
                 end_date=self.end_date,
             )
             # Recompute static datas for last month
-            self.acc_operation_id.set_static_data()
+            self.acc_operation_id._set_static_data()