def get_comment_form(parser, token):
    return CommentFormNode.handle_token(parser, token)
extra_data dicts get merged proper-like.
dataset/ETHPy150Open theju/django-comments-apps/threaded_comments/templatetags/threaded_comments.py/get_comment_form--crossover with--dataset/ETHPy150Open buildingenergy/buildingenergy-platform/seed/tests/test_models.py/TestBuildingSnapshot.test_merge_extra_data