in jenkins-pipeline-shared-libraries/vars/util.groovy [23:28]
def getProjectGroupName(String project, String defaultGroup = "apache") {
def projectNameGroup = project.split("\\/")
def group = projectNameGroup.size() > 1 ? projectNameGroup[0] : defaultGroup
def name = projectNameGroup.size() > 1 ? projectNameGroup[1] : project
return [group, name]
}