Spring Auto REST Docs JDK 11 bug reproduce case

Setup:

• JDK 11 (openjdk),
• sourceCompatibility = 11 and
• capital.scalable:spring-auto-restdocs-json-doclet-jdk9:2.0.4 dependency.

Run ./gradlew build.

Fails to generate documentation because of missing jsonDoclet output.

but

Setup:

• JDK 1.8 (Oracle),
• sourceCompatibility = 1.8 and
• capital.scalable:spring-auto-restdocs-json-doclet:2.0.4 dependency.

Run ./gradlew build.

Works as expected.