Exclude super source from javadoc.
The Java 9 javadoc tool freaks out about it.
</configuration>
</plugin>
+ <plugin>
+ <groupId>org.apache.maven.plugins</groupId>
+ <artifactId>maven-javadoc-plugin</artifactId>
+ <configuration>
+ <sourceFileExcludes>
+ <sourceFileExclude>**/playn/super/**</sourceFileExclude>
+ </sourceFileExcludes>
+ </configuration>
+ </plugin>
+
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>gwt-maven-plugin</artifactId>
