How to close/destroy chrome devtools ExtensionPanel programmatically? - google-chrome-extension

I have recently created a extension for devtools, which adds a new ExtensionPanel on devtools. Since this panel is useful only on certain pages, I wanted to show it conditionally depending on contents of current page. I can create a panel dynamically,depending on context of the page, but I was unable to find any way to close it (I've tried window.close() and panel itself doesn't have any methods like this).
So my question: Is there any way to close ExtensionPanel programmatically?

This is not supported by DevTools at the moment -- if you add a panel or sidebar, it's for the life of DevTools front-end. All stock DevTools panels are displayed unconditionally and the rationale for the lack of API methods to remove panels is to avoid confusion created by panels coming and going. If a panel is not applicable to the page being inspected at the moment, you can perhaps display a banner explaining why it's not applicable.

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it seems you can not do it.
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https://developer.chrome.com/extensions/devtools_panels#type-ElementsPanel

Is it possible to show chrome extension icon inside the web page?

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