private static boolean hasProcedureSupport(int major, int minor) {
    // Note: this won't work if the shortcut similar to the one in HRegionServer is used
    // without the corresponding version handling.
    return VersionInfoUtil.currentClientHasMinimumVersion(major, minor);
  }
Returns the singleton latch which does nothing.
hbase-server/src/main/java/org/apache/hadoop/hbase/master/procedure/ProcedurePrepareLatch.java