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