nl_tokens: Add a child component
pl_tokens: function ( child ) { this . _validateChild ( child ) ; if ( child . parent ) { child . parent . remove ( child ) ; } child . parent = this ; this . _children . push ( child ) ; this . root . appendChild ( <mask> . root ) ; if ( this . __fastinject__ ) { this . __fastinject__ ( child ) ; } // otherwise it will be injected when __fastinject__ is set }