task sonaTypeUpload(type: Upload) {
    configuration = configurations.archives
    uploadDescriptor = true
    repositories {
        if (project.hasProperty('ossrhUsername')) {
            mavenDeployer {
                beforeDeployment { MavenDeployment deployment -> signing.signPom(deployment) }
                repository(url: 'https://oss.sonatype.org/service/local/staging/deploy/maven2') {
                    authentication(userName: ossrhUsername, password: ossrhPassword)
                }
                snapshotRepository(url: 'https://oss.sonatype.org/content/repositories/snapshots') {
                    authentication(userName: ossrhUsername, password: ossrhPassword)
                }
                pom.project {
                    groupId project.group
                    artifactId project.name
                    version project.version
                    name project.name
                    description description
                    packaging 'jar'
                    inceptionYear '2016'
                    url scmUrl
                    organization {
                        name 'xbib'
                        url 'http://xbib.org'
                    }
                    developers {
                        developer {
                            id user
                            name 'Jörg Prante'
                            email 'joergprante@gmail.com'
                            url 'https://github.com/jprante'
                        }
                    }
                    scm {
                        url scmUrl
                        connection scmConnection
                        developerConnection scmDeveloperConnection
                    }
                    licenses {
                        license {
                            name 'BSD 3-Clause License'
                            url 'https://opensource.org/licenses/BSD-3-Clause'
                        }
                    }
                }
            }
        }
    }
}