given:
        createBuildScripts("""
            task extraJar(type: Jar) {
                from sourceSets.main.allJava
                archiveBaseName = "publishTest-extra"
            }

            artifacts {
                implementation extraJar
                archives extraJar
                it."default" extraJar
            }

            publishing {
                publications {

     * <pre>
     * project.sync {
     *     from 'source'
     *     into 'dest'
     *     preserve {
     *         include 'extraDir/**'
     *         include 'dir1/**'
     *         exclude 'dir1/extra.txt'
     *     }
     * }
     * </pre>
     *
     * @param action Action to configure the SyncSpec.
     * @since 4.0