public bool RemoveAccountLicensesChangedListener(AccountLicensesChangedCallback callback, object userData)
    {
        AccountLicensesChangedListener item = new AccountLicensesChangedListener();

        item.SetCallback(callback);
        item.SetUserData(userData);
        return(this.m_accountLicensesChangedListeners.Remove(item));
    }
    public bool RegisterAccountLicensesChangedListener(AccountLicensesChangedCallback callback, object userData)
    {
        AccountLicensesChangedListener item = new AccountLicensesChangedListener();

        item.SetCallback(callback);
        item.SetUserData(userData);
        if (this.m_accountLicensesChangedListeners.Contains(item))
        {
            return(false);
        }
        this.m_accountLicensesChangedListeners.Add(item);
        return(true);
    }