Gradle javadoc warnings conflict with java 8 javadoc syntax

When declaring a method in an interface, gradle javadoc emits spurious warnings about missing @return javadoc lines… This conflicts with Java 8 Javadoc syntax, which rejects @return lines for methods of an interface. Please detect this situation and hide such messages.

Gradle Version: 2.7
Operating System: Mac OS X 10.11.5 El Capitan