How do I set generateTestResultAttributes in TestNG when using gradle to run the tests?

I've looked through the documentation and countless examples, but all of them point to setting it in Maven. I want to set it when using gradle to run the tests. Below is my test task I have set in my build.gradle. By default it runs all smoke tests on a build, but I can pass in whatever group variation I want but I can't generate tests attributes no matter what I try.

test {
    useTestNG() {
        //run classes in parallel, thread count limited by processor.
        options {
            parallel = 'classes'
            threadCount = Runtime.runtime.availableProcessors()
        }
        listeners << 'com.automation.listeners.TestNgListener'
        //sets the default group to run as smoke.*, .* is wildcard.
        includeGroups System.getProperty('groups', 'smoke.*')
        excludeGroups System.getProperty('excludeGroups', 'exclude')
    }
    //we want display the following test events
    testLogging {
        events "PASSED", "FAILED", "SKIPPED"
    }
    reports.html.enabled = false
}