private String toELExpression(String s)
   {
      if (s != null && !s.startsWith("#{")) {
         return "#{" + s + "}";
      }
      return s;
   }
private String toELExpression(String s)
   {
      if (s != null && !s.startsWith("#{")) {
         return "#{" + s + "}";
      }
      return s;
   }
private String toELExpression ( String s ) { if ( s != null && ! s . startsWith ( "#{" ) ) { return "#{" + s + "}" ; } return s ; }
Adds #{..} to the expression if required
Adds # { .. } to the expression if required