protected void updateOwnerAndAcquirer(final Owner owner) {
        this.owner = owner;
        if (this.owner != null) {
            this.owner.updateAcquirerInfo(this.acquirer);
        }
    }
Returns the 'lock-context' of current lock owner.
jraft-rheakv/rheakv-core/src/main/java/com/alipay/sofa/jraft/rhea/util/concurrent/DistributedLock.java