public static DistributedLockService getServiceNamed(String serviceName) {
    return DLockService.getServiceNamed(serviceName);
  }
Look up and return the DistributedLockService with the given name, if it has been created in
this VM. If it has not been created, return null.

@param serviceName the name of the DistributedLockService to look up

@return the DistributedLockService with the given name, or null if it hasn't been created in
        this VM.
geode-core/src/main/java/org/apache/geode/distributed/DistributedLockService.java