Create the cache key for the current page and tag type

def get_cache_key(request, page, lang, site_id, title):
    """
    Create the cache key for the current page and tag type
    """
    from cms.cache import _get_cache_key
    from cms.templatetags.cms_tags import _get_page_by_untyped_arg

    from cms.models import Page
    if not isinstance(page, Page):
        page = _get_page_by_untyped_arg(page, request, site_id)
    if not site_id:
        try:
            site_id = page.node.site_id
        except AttributeError:  # CMS_3_4
            site_id = page.site_id
    if not title:
        return _get_cache_key('page_tags', page, '', site_id) + '_type:tags_list'
    else:
        return _get_cache_key('title_tags', page, lang, site_id) + '_type:tags_list'