private void releaseLocks() { if (lockElements != null) { Collection<LockElement> releaseFailures = null; Exception releaseException = null; for (LockElement lockElement : lockElements) { try { lockElement.releaseIfAcquired(); } catch (Exception e) { releaseException = e; if (releaseFailures == null) { releaseFailures = new ArrayList<>(); } releaseFailures.add(lockElement); } } if (releaseException != null) { log.warn( "Unable to release locks: " + releaseFailures + ". Example of exception:" + releaseException); } } }