SettableFuture<String> orig = SettableFuture.create();
    SettableFuture<String> prev = orig;
    for (int i = 0; i < 100000; i++) {
      SettableFuture<String> curr = SettableFuture.create();
      prev.setFuture(curr);
      prev = curr;
    }
    // prev represents the 'innermost' future
    prev.set("done");
    assertTrue(orig.isDone());
  }

					//	var deploymentID string
					sys.hMutex.RLock()
					prev, ok := sys.hc[result.Endpoint.Host]
					sys.hMutex.RUnlock()
					if ok {
						if prev.Online != result.Online || !result.Online {
							if !prev.lastHCAt.IsZero() {
								offline = time.Since(prev.lastHCAt) + prev.offlineDuration
							} else {
								offline = prev.offlineDuration
							}
						} else if result.Online {

        reader.addSort(SortBuilders.fieldSort("field2"));
        int count = 0;
        int prev = -1;
        Map<String, Object> source;
        while ((source = reader.read()) != null) {
            int current = Integer.parseInt(source.get("field2").toString());
            assertTrue(prev < current);
            prev = current;
            count++;
        }
        assertEquals(num, count);

  }

  private void setPredecessor(int entry, int pred) {
    long predMask = (~0L) << 32;
    links[entry] = (links[entry] & ~predMask) | ((long) pred << 32);
  }

  private void setSucceeds(int pred, int succ) {
    if (pred == ENDPOINT) {
      firstEntry = succ;
    } else {
      setSuccessor(pred, succ);
    }
    if (succ == ENDPOINT) {
      lastEntry = pred;
    } else {
      setPredecessor(succ, pred);

    SettableFuture<String> orig = SettableFuture.create();
    SettableFuture<String> prev = orig;
    for (int i = 0; i < 100000; i++) {
      SettableFuture<String> curr = SettableFuture.create();
      prev.setFuture(curr);
      prev = curr;
    }
    // prev represents the 'innermost' future
    prev.set("done");
    assertTrue(orig.isDone());
  }

    }

    private void succeedsInValueSet(
        @Nullable ValueEntry<K, V> pred, @Nullable ValueEntry<K, V> succ) {
      if (pred == null) {
        firstEntry = succ;
      } else {
        pred.successorInValueSet = succ;
      }
      if (succ == null) {
        lastEntry = pred;
      } else {
        succ.predecessorInValueSet = pred;
      }
    }

            return;
        }

        ComparableVersion prev = null;
        int i = 1;
        for (String version : args) {
            ComparableVersion c = new ComparableVersion(version);

            if (prev != null) {
                int compare = prev.compareTo(c);
                System.out.println(
                        "   " + prev + ' ' + ((compare == 0) ? "==" : ((compare < 0) ? "<" : ">")) + ' ' + version);

   * prev}. {@code ENDPOINT} represents either the first or last entry in the entire map (as
   * appropriate).
   */
  private void setSucceeds(int prev, int next) {
    if (prev == ENDPOINT) {
      firstInInsertionOrder = next;
    } else {
      nextInInsertionOrder[prev] = next;
    }
    if (next == ENDPOINT) {
      lastInInsertionOrder = prev;
    } else {

	if cntReplicated > 0 && cntReplicated != total {
		return false
	}
	// check if policies match between sites
	var prev madmin.SRPolicyMapping
	for i, p := range policies {
		if i == 0 {
			prev = p
			continue
		}
		if prev.IsGroup != p.IsGroup ||
			prev.Policy != p.Policy ||
			prev.UserOrGroup != p.UserOrGroup {
			return false
		}
	}
	return true
}

        // not all.  See the test cases for examples on how this can happen.
        try {
          ((Thread) currentRunner).interrupt();
        } finally {
          Runnable prev = getAndSet(DONE);
          if (prev == PARKED) {
            LockSupport.unpark((Thread) currentRunner);
          }
        }
      }
    }
  }

  /**