RemoteThread getRemoteThread() {
      return lesseeThread;
    }
Returns the identity of the thread that has this lock leased.
<p>
Caller must synchronize on this grant token.

@return the identity of the thread that has this lock leased guarded.By this
geode-core/src/main/java/org/apache/geode/distributed/internal/locks/DLockGrantor.java