@Override
  protected void releaseLock(final MasterProcedureEnv env) {
    env.getProcedureScheduler().wakeNamespaceExclusiveLock(this, getNamespaceName());
  }
Base class for all the Namespace procedures that want to use a StateMachineProcedure. It provide
some basic helpers like basic locking and basic toStringClassDetails().
hbase-server/src/main/java/org/apache/hadoop/hbase/master/procedure/AbstractStateMachineNamespaceProcedure.java