src/vs/workbench/contrib/comments/browser/commentsEditorContribution.ts/CommentingRangeDecorator/update
class CommentingRangeDecorator:	public update(editor: ICodeEditor | undefined, commentInfos: ICommentInfo[], cursorLine?: number, range?: Range) {
		if (editor) {
			this._editor = editor;
			this._infos = commentInfos;
			this._doUpdate(editor, commentInfos, cursorLine, range);
		}
	}