Gradle-Task to generate a Multi-Module 'pom.xml' file

build.gradle

task createPom {
    pom {
        project {
            groupId = project.group
            artifactId = project.name
            version = project.version
            modules = subprojects.collect { p -> p.name }
            if(subprojects.empty) {
                parent {
                    artifactId = rootProject.name
                    groupId = project.group
                    version = project.version
                }
            }
        }

    }.writeTo("pom.xml")
}