in src/org/apache/jackrabbit/vault/PipelineSupport.groovy [28:31]
static PipelineSupport createInstance(String mainNodeLabel, int mainJdkVersion, String mainMavenVersion, String mainBranch) {
INSTANCE = new PipelineSupport(mainNodeLabel, mainJdkVersion, mainMavenVersion, mainBranch)
return INSTANCE
}