src/vs/workbench/contrib/comments/browser/commentsEditorContribution.ts/CommentController/closeWidget
class CommentController:	public closeWidget(): void {
		if (this._commentWidgets) {
			this._commentWidgets.forEach(widget => widget.hide());
		}

		this.editor.focus();
		this.editor.revealRangeInCenter(this.editor.getSelection()!);
	}