in src/main/java/com/ericsson/gerrit/plugins/projectgroupstructure/DefaultAccessRights.java [163:171]
private boolean isValidRegex(String refPattern) {
try {
RefPattern.validateRegExp(refPattern);
} catch (InvalidNameException e) {
log.error("Invalid ref name: {}", e.getMessage());
return false;
}
return true;
}