code: public ExprTransformer getExprTransfomer() throws TagLibException {
  	// Class cls;
  	if (exprTransformer != null) return exprTransformer;
  
  	try {
  	    exprTransformer = (ExprTransformer) ClassUtil.loadInstance(ELClass.getClazz());
  	    // exprTransformer = (ExprTransformer) cls.newInstance();
  	}
  	catch (Exception e) {
  	    throw new TagLibException(e);
  	}
  	return exprTransformer;
      }
docs: Laedt den innerhalb der TagLib definierten ExprTransfomer und gibt diesen zurueck. Load
  Expression Transfomer defined in the tag library and return it.
  
  @return ExprTransformer
  @throws TagLibException