How to get default loading indicator for DataGrid

Hi all,

How to get default loading indicator for DataGrid?
Is Default blinking 3 boxes while loading data is animated image?

I tried to use Widget defaultWidget = getLoadingIndicator();
but it gives me null value.

what i want is i need to show static text before the 3 boxes.

i tried overriding setLoadingIndicator but no help, any help
regarding the same
public void setLoadingIndicator()
{
//giving null value here
Widget defaultWidget = getLoadingIndicator();
HorizontalPanel hp = new HorizontalPanel();

hp.add(new Label("Please wait loading"));
hp.add(defaultWidget);
super.setLoadingIndicator(hp);
}

Thanks in advance
Daya

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