Scanning Kotlin doesnt work with gradle-plugin

[David-OliverM]

Component	Version
Gradle	4.0.1
Java	1.8
SpotBugs	4.1.2
FindSecBugs	1.10.1

Problem

According to #500 (comment) findsecbugs is Kotlin-ready. But in my case it isn't giving any output when analysing my Kotlin project. It is analysing the java files but not the kotlin files. I created a java file and a kotlin file with the exact same Bug. It finds the Bug in the java file but not in the kotlin file. Im using the Gradle-plugin to scan my Android Project.

[KengoTODA]

Please share mcve project to reproduce the issue in our local.