src/vs/editor/browser/services/editorWorkerService.ts/EditorWorkerClient/navigateValueSet
class EditorWorkerClient:	public navigateValueSet(resource: URI, range: IRange, up: boolean): Promise<languages.IInplaceReplaceSupportResult | null> {
		return this._withSyncedResources([resource]).then(proxy => {
			const model = this._modelService.getModel(resource);
			if (!model) {
				return null;
			}
			const wordDefRegExp = this.languageConfigurationService.getLanguageConfiguration(model.getLanguageId()).getWordDefinition();
			const wordDef = wordDefRegExp.source;
			const wordDefFlags = regExpFlags(wordDefRegExp);
			return proxy.navigateValueSet(resource.toString(), range, up, wordDef, wordDefFlags);
		});
	}