protected boolean isLockingSuspended() {
    if (DEBUG_SUSPEND_LOCK) {
      Assert.assertHoldsLock(suspendLock, true);
    }
    return lockingSuspendedBy != null;
  }
Returns true if locking has been suspended.
<p>
Caller must synchronize on suspendLock.

Concurrency: protected by synchronization of {@link #suspendLock}

@return true if locking has been suspended
geode-core/src/main/java/org/apache/geode/distributed/internal/locks/DLockGrantor.java