src/vs/editor/contrib/inlineCompletions/browser/ghostTextWidget.ts/DecorationsWidget/clear
class DecorationsWidget:	public clear(): void {
		// Using change decorations ensures that we update the id's before some event handler is called.
		this.editor.changeDecorations(accessor => {
			this.decorationIds = accessor.deltaDecorations(this.decorationIds, []);
		});
	}