nl_tokens: Sets the CSS class that provides the icon image for this header . This method will replace any existing icon class if one has already been set .
pl_tokens: function ( cls ) { var me = this , isEmpty = ! cls || ! cls . length , iconCmp = me . iconCmp ; me . iconCls = cls ; if ( ! me . iconCmp && ! isEmpty ) { me . initIconCmp ( ) ; me . insert ( 0 , me . iconCmp ) ; } else if ( iconCmp ) { if ( isEmpty ) { me . iconCmp . destroy ( ) ; delete <mask> . iconCmp ; } else { iconCmp . removeCls ( iconCmp . iconCls ) ; iconCmp . addCls ( cls ) ; iconCmp . iconCls = cls ; } } }