Javadoc isn't delomboked

The documentation generated by `mvn javadoc:javadoc` is missing the methods auto-generated by Lombok. So, the documentation is missing methods like `builder()` that are used in our examples.

There's a [Maven plugin](http://anthonywhitford.com/lombok.maven/lombok-maven-plugin/index.html) that helps. I've tried it and it seems to work. The steps are:

1. Moving the source code from `src/main/java` to `src/main/lombok`
2. Adding the following stanza to `pom.xml`:

```xml

org.projectlombok
lombok-maven-plugin
1.18.10.0


generate-sources

delombok




```

After that, the javadoc goal produces the full documentation.