Ajuda - Convert (class java.util.ArrayList to class javax.faces.model.SelectItem)

public List<SelectItem> getElements() { 		
    PropertiesUtils propertiesUtils = new PropertiesUtils("C:/teste,"fi.properties");
    propertiesUtils.loadProperties();
	    
    List lista = new ArrayList();
	    
    if (propertiesUtils != null) {	
	    	
	iterator iterator = null;
	Map.Entry element = null;
			 
			  			    
	iterator = propertiesUtils.getProperties().entrySet().iterator();
	element = null;
				
	while ( iterator.hasNext() ) {					
	     element = (Map.Entry) iterator.next();										
	    lista.add(new SelectItem(element.getKey().toString()));  }				    		    	
  }
	    
	 System.out.println(lista);
	 return lista;	    
	 
    }