/// <remarks/>
public void getByParentGroupIdAsync(ContactGroupsByParentGroupIdRequest getByParentGroupIdRequest, object userState) {
if ((this.getByParentGroupIdOperationCompleted == null)) {
this.getByParentGroupIdOperationCompleted = new System.Threading.SendOrPostCallback(this.OngetByParentGroupIdOperationCompleted);
}
this.InvokeAsync("getByParentGroupId", new object[] {
getByParentGroupIdRequest}, this.getByParentGroupIdOperationCompleted, userState);
}
/// <remarks/>
public void getByParentGroupIdAsync(ContactGroupsByParentGroupIdRequest getByParentGroupIdRequest) {
this.getByParentGroupIdAsync(getByParentGroupIdRequest, null);
}