The build is failing on this line. There seem to be a non printable char between `{` and `return`.

```
[20:20:47][com.gwtplatform:gwtp-carstore] [INFO] com.google.gwt.dev.js.JsParserException: StandardLinkerContext.optimizeJavaScript(431): missing ; before statement
[20:20:47][com.gwtplatform:gwtp-carstore] [INFO] >     if (propertyName == '') {Â return undefined; }
```