* Add default
* Convert function to non-static
* Remove static for private functions
* Replace .call
* Move functions with side effects into a synchronous prepare function
* Rename variables with "container" to "frame" in _initializeFrame
* Rename variables with "container" to "frame"
* Rename getContainer to getFrame
* Rename getContainerRect to getFrameRect
* Organize and simplify
* Fix incorrect change of "popup" => "this"
* Move initial _updateVisibility into prepare()
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