Move tag method to where it's used. Prevent subclass overriding.
Move tag method to where it's used. Prevent subclass overriding.

lockerfish/timber,vipulshah2010/timber,MaTriXy/timber,robertschmid/timber,vipulshah2010/timber,hejunbinlan/timber,ab271994/timber,JakeWharton/timber,MichaelEvans/timber,hejunbinlan/timber,robertschmid/timber,maxme/timber,maxme/timber,jianlei/timber,ab271994/timber,donnfelker/timber,lockerfish/timber,jianlei/timber,jsibbold/timber,donnfelker/timber,zhuxiaohao/timber,msdgwzhy6/timber,JakeWharton/timber,MaTriXy/timber,angcyo/timber,MichaelEvans/timber,leixinstar/timber,zhuxiaohao/timber,jsibbold/timber,angcyo/timber,leixinstar/timber,MaTriXy/timber,msdgwzhy6/timber,leixinstar/timber