Load indication
When data loading takes time, the Business Forms panel displays loading indicators.
Initial request
A moving blue line displays at the top of the form.

Update request
All buttons are disabled and moving circular dots display in place of the Submit button icon.

Custom code
Custom code can be asynchronous. For that, the custom code should return the Promise.
const getInitialData = async () => {
const response = await fetch("http://123");
const data = await response.json();
/**
* Update Elements with data
*/
context.panel.onChange([]);
};
/**
* Return Promise
*/
return getInitialData();


