public static String styleClasses(Collection<? extends BaseStyler> l) {
      if (l == null) {
         return "argument is null";
      }

      for (BaseStyler st : l) {
         if (st instanceof DebugStyler) {
            return ((DebugStyler) st).getStyleSetup().toString();
         }
      }

      return "";
   }
public static String styleClasses ( Collection < ? extends BaseStyler > l ) { if ( l == null ) { return "argument is null" ; } for ( BaseStyler st : l ) { if ( st instanceof DebugStyler ) { return ( ( DebugStyler ) st ) . getStyleSetup ( ) . toString ( ) ; } } return "" ; }
for debugging, uses {@link DebugStyler#getStyleSetup() } to return classNames

@param l
@return