This method is overriden in:
This method overrides django.db.migrations.operations.base.Operation.database_backwards.
This method overrides django.db.migrations.operations.base.Operation.database_forwards.
This method overrides django.db.migrations.operations.base.Operation.describe.
This method overrides django.db.migrations.operations.base.Operation.migration_name_fragment.
This method overrides django.db.migrations.operations.base.Operation.state_forwards.