prev = curr;
    }
    // prev represents the 'innermost' future
    prev.set("done");
    assertTrue(orig.isDone());
  }

  // Verify that StackOverflowError in a long chain of SetFuture doesn't cause the entire toString
  // call to fail
  @J2ktIncompatible
  @GwtIncompatible
  @AndroidIncompatible // b/391667564: crashes from stack overflows
  public void testSetFutureToString_stackOverflow() {

    void removeCollectedEntry(ReferenceEntry<K, V> entry) {
      enqueueNotification(
          entry.getKey(),
          entry.getHash(),
          entry.getValueReference().get(),
          entry.getValueReference().getWeight(),
          RemovalCause.COLLECTED);
      writeQueue.remove(entry);
      accessQueue.remove(entry);
    }

    /** Removes an entry whose key has been garbage collected. */

the semaphore.
This is a common idiom for limiting concurrency.
</p>

<p>
This program starts a goroutine for every entry in the work list, but the
goroutines coordinate using the <code>limit</code> channel to ensure
that at most three are running work functions at a time.
</p>

<pre>
var limit = make(chan int, 3)

func main() {
	for _, w := range work {

				return nil
			}
			if wildcard.Match("multipart/*", entry.name) {
				return nil
			}
			if wildcard.Match("tmp-old/*", entry.name) {
				return nil
			}
		}
		fivs, err := entry.fileInfoVersions(bucket)
		if err != nil {
			return healObjectFn(bucket, entry.name, "", scanMode)
		}
		if opts.Remove && !opts.DryRun {
			err := z.CheckAbandonedParts(ctx, bucket, entry.name, opts)

			return srcSet.CopyObject(ctx, srcBucket, srcObject, dstBucket, dstObject, srcInfo, srcOpts, dstOpts)
		}
		// CopyObject optimization where we don't create an entire copy
		// of the content, instead we add a reference, we disallow legacy
		// objects to be self referenced in this manner so make sure
		// that we actually create a new dataDir for legacy objects.

			if err != nil {
				t.Fatalf("Test %d: %s: Failed to look for copied object part: <ERROR> %s", i+1, instanceType, err)
			}
			if len(results.Parts) != 1 {
				t.Fatalf("Test %d: %s: Expected only one entry returned %d entries", i+1, instanceType, len(results.Parts))
			}
		}
	}

	// HTTP request for testing when `ObjectLayer` is set to `nil`.

          return;
        }
      }
      // If all the delegates were complete, no reason for the next listener to have to
      // go through the whole list. Avoids O(n^2) behavior when the entire output list is
      // cancelled.
      delegateIndex = delegates.size();
    }

    @SuppressWarnings("Interruption") // We are propagating an interrupt from a caller.
    private void recordCompletion() {

	}
	_, err = r.Open("test.txt")
	if err != nil {
		t.Errorf("Error reading file: %v", err)
	}
	if len(r.File) != 1 {
		t.Fatalf("No entries in the file list")
	}
	if r.File[0].Name != "../test.txt" {
		t.Errorf("Unexpected entry name: %s", r.File[0].Name)
	}
	if _, err := r.File[0].Open(); err != nil {
		t.Errorf("Error opening file: %v", err)
	}
}

      "Licensor" shall mean the copyright owner or entity authorized by
      the copyright owner that is granting the License.

      "Legal Entity" shall mean the union of the acting entity and all
      other entities that control, are controlled by, or are under common
      control with that entity. For the purposes of this definition,

        return;
      }
      synchronized (this) {
        if (closed) {
          return;
        }
        closed = true;
      }
      for (Map.Entry<AutoCloseable, Executor> entry : entrySet()) {
        closeQuietly(entry.getKey(), entry.getValue());
      }
      clear();
      if (whenClosed != null) {
        whenClosed.countDown();
      }
    }