How to run Jetty via Gradle in Debug Mode

On Linux:

export GRADLE_OPTS="-Xdebug -Xrunjdwp:transport=dt_socket,address=9999,server=y,suspend=n"
gradle jettyRun

On Windows:

set GRADLE_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,address=9999,server=y,suspend=‌​n
gradle jettyRun