问在selenium中的下拉列表中没有列出如何检查值

EN

String valueBeingChecked="xxxx";
int flag=0;
WebElement drpdwn=driver.findElement(by.id("DROPDOWN_ID");
Select DrpDwnSel=new Select(drpdwn);
List<WebElement> DrpDwnList=DrpDwnSel.getOptions();
  For(WebElement indElem:DrpDwnList){
      if (indElem.getText().contains(valueBeingChecked)){
         Flag=1;
         break;
         }
  }

    public boolean isOptionExisted(String option) {
    boolean result=true;
    try {
        
        Select selection= new Select(dropdownWebElement);
        selection.selectByVisibleText(option);
        
    }catch(Exception e) {
        result = false;
    }
    return result;
}