def METHOD_NAME(self, doc):
    # creates a change object for the last form submission
    # for the user to each of their apps.
    # this allows us to reindex for the app status report
    # without reindexing all forms.
    changes = []
    forms = get_last_forms_by_app(doc['_id'])
    for form in forms:
        doc_meta = get_doc_meta_object_from_document(form)
        change_meta = change_meta_from_doc_meta_and_document(
            doc_meta=doc_meta,
            document=form,
            data_source_type='elasticsearch',
            data_source_name='hqforms',
        )
        changes.append(Change(
            id=change_meta.document_id,
            sequence_id=None,
            document=form,
            deleted=change_meta.is_deletion,
            metadata=change_meta,
            document_store=None,
        ))
    return changes