src/vs/editor/browser/services/abstractCodeEditorService.ts/AbstractCodeEditorService/getTransientModelProperties
class AbstractCodeEditorService:	public getTransientModelProperties(model: ITextModel): [string, any][] | undefined {
		const uri = model.uri.toString();

		if (!this._transientWatchers.hasOwnProperty(uri)) {
			return undefined;
		}

		return this._transientWatchers[uri].keys().map(key => [key, this._transientWatchers[uri].get(key)]);
	}