implement Size() for UID/TeamID/UserOrTeamID (#9556)
implement Size() for UID/TeamID/UserOrTeamID (#9556)


keybase/client,keybase/client,keybase/client,keybase/client,keybase/client,keybase/client,keybase/client,keybase/client,keybase/client,keybase/client,keybase/client,keybase/client