nl_tokens: Starts the hide animation .
pl_tokens: function _startHideAnimation ( item , prevItem , size ) { var <mask> = item . options . hide . animation ? item . options . hide . animation . call ( undefined , false , size ) : { } ; item . endSpec = spec ; item . startSpec = { opacity : 1 , transform : Transform . identity } ; if ( ! item . halted ) { item . mod . halt ( ) ; var callback = item . hideCallback ; if ( spec . transform ) { item . mod . setTransform ( spec . transform , item . options . hide . transition , callback ) ; callback = undefined ; } if ( spec . opacity !== undefined ) { item . mod . setOpacity ( spec . opacity , item . options . hide . transition , callback ) ; callback = undefined ; } if ( callback ) { callback ( ) ; } } }