@Override
    public String toString() {

      return "{DLockRequestMessage id=" + processorId
          + " for " + serviceName + ":" + dlsSerialNumber
          + " name=" + objectName
          + " start=" + startTime
          + " sender=" + getSender()
          + " threadId=" + threadId
          + " leaseMillis=" + leaseMillis
          + " waitMillis=" + waitMillis
          + " reentrant=" + reentrant
          + " tryLock=" + tryLock
          + " lockId=" + lockId
          + " grantorVersion=" + grantorVersion
          + " grantorSerialNumber=" + grantorSerialNumber
          + " dlsSerialNumber=" + dlsSerialNumber
          + "}";
    }
Callers must be synchronized on this
geode-core/src/main/java/org/apache/geode/distributed/internal/locks/DLockRequestProcessor.java