nl_tokens: primitive for array support .
pl_tokens: function ( idx , amt , objects ) { if ( this . isFrozen ) throw Ember . FROZEN_ERROR ; // if we replaced exactly the same number of items, then pass only the // replaced range. Otherwise, pass the full remaining array length // since everything has shifted var len = objects ? <mask> ( objects , 'length' ) : 0 ; this . arrayContentWillChange ( idx , amt , len ) ; if ( len === 0 ) { this . splice ( idx , amt ) ; } else { replace ( this , idx , amt , objects ) ; } this . arrayContentDidChange ( idx , amt , len ) ; return this ; }