Groovy integrate Ant tasks

apply plugin: 'java'

def antBuild = ant.import(file: file('build.xml'), optional: false)
def antProject = antBuild.project
def antTargets = antProject.targets

antTargets.each { targetName, target ->
    task "ant.$targetName" {
        group = 'ant'
        doLast {
            target.execute()
        }
    }
}