@Override
public Object resolve(Invocation inv, ParamMetaData metaData) {
String toConvert = null;
//
FlashParam flashParam = metaData.getAnnotation(FlashParam.class);
if (flashParam != null) {
toConvert = inv.getFlash().get(flashParam.value());
}
for (String paramName : metaData.getParamNames()) {
if (paramName != null) {
toConvert = inv.getRequest().getParameter(paramName);