Search for NCMB: What is the function that searches by ID and returns whether it exists or not?

//<summary>
    /// Record Score to NCMB Score (float) Game Name
    /// </summary>
public static void saveScore(float score, string game) {
    Debug.Log("score:"+score+", game:"+game);
    string id = PlayerPrefs.GetString(RegisterID.UID, ""; // Call a unique ID
    NCMBQuery<NCMBObject>query=newNCMBQuery<NCMBObject>(game);
    query.WhereEqualTo("id", id); Search by //id
    query.FindAsync ((List<NCMBObject>objList,NCMBExceptione) =>{
        // If the search is successful   
        if(e==null){
            Debug.Log("Search OK");
            objList[0]["Score"]=score;
            objList[0].SaveAsync();
        } else {
        // Debug.Log("saveScore:err") without spitting out the following log;
            NCMBObject object j = new NCMBObject(game);
            obj["id"] = PlayerPrefs.GetString(RegisterID.UID, "";
            obj["Name"] = PlayerPrefs.GetString(RegisterID.NAME, ");
            obj["Score"] = score;
            obj.SaveAsync();
        }
    });
}