Deprecation: #78410 - Deprecate popover member instance in TYPO3 global object. 

Description 

The member instance TYPO3.Popover has been marked as deprecated.

Impact 

Using the global instance will not throw any deprecation message.

Affected Installations 

Any backend JavaScript or TypeScript using TYPO3.Popover.

Migration 

Usage in TypeScript:

import Popover = require('TYPO3/CMS/Backend/Popover');

To use popovers in an amd module, add it as a dependency and a corresponding argument to the anonymous function:

define('TYPO3\CMS\Extension\Module', ['jquery', 'TYPO3\CMS\Backend\Popover', 'bootstrap'], function($, Popover) {});