JavaFX 11 in Netbeans 10 (with Maven) has no Sources/Javadocs

I tried out the JavaFX tutorial for Netbeans with Maven and got it running without a problem. Maven found the artifacts, downloaded them, build the project and started it. But I get no code completion (Missing sources and Javadocs).

I tried to download the sources and javadocs for the maven dependencies in Netbeans, but only the sources/javadocs for the wrapper artifacts (e.g. the empty javafx-controls-11) are available. But no sources are found for the actual implementation (e.g. javafx-controls-11-linux).

Where do I find the sources/javadocs and how do I add them to Netbeans?

There is an issue already filed about this at the OpenJFX docs.

While it hasn't been resolved yet, there is a possible workaround, based on:

NetBeans only adds javadoc/source jars for a jar with the exact same name and -javadoc/-source suffix

So here are the steps to solve it:

Install NetBeans 10 and JDK 11.0.2.
Clone the HelloFX sample for NetBeans and Maven, from the OpenJFX samples.

Update the JavaFX dependencies to 11.0.2.

<dependency>
    <groupId>org.openjfx</groupId>
    <artifactId>javafx-controls</artifactId>
    <version>11.0.2</version>
</dependency>
<dependency>
    <groupId>org.openjfx</groupId>
    <artifactId>javafx-fxml</artifactId>
    <version>11.0.2</version>
</dependency>

Run it:
```
mvn clean compile exec:java
```
Check that the JavaFX dependencies have been downloaded to your local m2 repository. Under <user home>/.m2/repository/org/openjfx/javafx-base/11.0.2 for instance you will find javafx-base-11.0.2.jar and javafx-base-mac-11.0.2.jar (or win, or linux based on your platform).
Back on NetBeans, right click in the Dependencies folder and select Download Sources (see the task progress in the bottom right taskbar), and then Download Javadoc(see the task progress).

Go to your m2 repository and verify that there are now -source and -javadoc jar files.

However, this won't solve the issue yet, there is an extra step:

In your m2 repository, manually rename the -source and -javadoc jar files using your platform classifier, to -mac-source and -mac-javadoc (or win, or linux based on your platform). Do this for the different JavaFX modules: