src/vs/workbench/api/browser/mainThreadWebviewPanels.ts/MainThreadWebviewPanels/dispose
class MainThreadWebviewPanels:	override dispose() {
		super.dispose();

		dispose(this._editorProviders.values());
		this._editorProviders.clear();

		dispose(this._revivers.values());
		this._revivers.clear();
	}