<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def sso_api_list():
 """ return sso related API """

        ssourls = []

        def collect(u, prefixre, prefixname):
            _prefixname = prefixname + [u._regex, ]
            urldisplayname = " ".join(_prefixname)

            if hasattr(u.urlconf_module, "_MODULE_MAGIC_ID_") \
                    and getattr(u.urlconf_module, "_MODULE_MAGIC_ID_") == MAGIC_ID:  # find aap name sso
                ssourls.append(urldisplayname)

        rooturl = import_by_path(settings.ROOT_URLCONF + ".urlpatterns")
        # traverse url matching tree to find the url statement including sso app,
        # should be 1 element in the ssourls unless you assigned 1+ prefix url for sso app
        traverse_urls(rooturl, resolverFunc=collect)

        finalQ = Q()  # filter to get full url of all registered sso api
        for prefix in ssourls:
            finalQ |= Q(name__startswith=prefix)
        return APIEntryPoint.objects.filter(finalQ)