*/
  private interface CycleDetectingLock {

    /**
     * @return the {@link LockGraphNode} associated with this lock.
     */
    LockGraphNode getLockGraphNode();

    /**
     * @return {@code true} if the current thread has acquired this lock.
     */
    boolean isAcquiredByCurrentThread();
  }

  /**
   * A {@code LockGraphNode} associated with each lock instance keeps track of the directed edges in

```

### Step 3: Test on RabbitMQ

The python program below waits on the queue exchange `bucketevents` and prints event notifications on the console. We use [Pika Python Client](https://www.rabbitmq.com/tutorials/tutorial-three-python.html) library to do this.

```py
#!/usr/bin/env python
import pika

connection = pika.BlockingConnection(pika.ConnectionParameters(
        host='localhost'))
channel = connection.channel()

    * This ensures that attachment and detachment of volumes is independent of any single nodes’ availability. Meaning, if a node or kubelet becomes unavailable for any reason, the volumes attached to that node will be detached so they are free to be attached to other nodes.

    assertCached(false, 101)
    assertCached(true, 200)
    assertCached(false, 201)
    assertCached(false, 202)
    assertCached(true, 203)
    assertCached(true, 204)
    assertCached(false, 205)
    assertCached(false, 206) // Electing to not cache partial responses
    assertCached(false, 207)
    assertCached(true, 300)
    assertCached(true, 301)
    assertCached(true, 302)
    assertCached(false, 303)

		return nil
	}

	optsMap := make(map[string]string)
	if opts.LockEnabled {
		optsMap["lockEnabled"] = "true"
		optsMap["versioningEnabled"] = "true"
	}
	if opts.VersioningEnabled {
		optsMap["versioningEnabled"] = "true"
	}
	if opts.ForceCreate {
		optsMap["forceCreate"] = "true"
	}
	createdAt, _ := globalBucketMetadataSys.CreatedAt(bucket)
	optsMap["createdAt"] = createdAt.UTC().Format(time.RFC3339Nano)

        }
        // requireNonNull is safe because of the contains check.
        Map.Entry<?, ?> entry = requireNonNull((Map.Entry<?, ?>) o);
        removeValuesForKey(entry.getKey());
        return true;
      }
    }

    @SuppressWarnings("unchecked")
    @Override
    public @Nullable Collection<V> get(@Nullable Object key) {
      return containsKey(key) ? multimap.get((K) key) : null;
    }

        }
        // requireNonNull is safe because of the contains check.
        Map.Entry<?, ?> entry = requireNonNull((Map.Entry<?, ?>) o);
        removeValuesForKey(entry.getKey());
        return true;
      }
    }

    @SuppressWarnings("unchecked")
    @Override
    public @Nullable Collection<V> get(@Nullable Object key) {
      return containsKey(key) ? multimap.get((K) key) : null;
    }

linear;\n}\n\n[data-widget=\"expandable-table\"][aria-expanded=\"true\"] i.expandable-table-caret[class*=\"right\"] {\n  transform: rotate(90deg);\n}\n\n[data-widget=\"expandable-table\"][aria-expanded=\"true\"] i.expandable-table-caret[class*=\"left\"] {\n  transform: rotate(-90deg);\n}\n\n[aria-expanded=\"true\"] {\n  cursor: pointer;\n}\n\n[aria-expanded=\"true\"] i.expandable-table-caret {\n  transition: transform 0.3s linear;\n}\n\n[aria-expanded=\"true\"] [data-widget=\"expandable-table\"] i.expandable-...

are still treated specially;
for instance, references to <code>SP</code> require a symbol,
much like <code>FP</code>.
To access the actual hardware register use the true <code>R</code> name.
For example, on the ARM architecture the hardware
<code>SP</code> and <code>PC</code> are accessible as
<code>R13</code> and <code>R15</code>.
</p>

<p>

## 0.115.9

### Fixes

* 🐛 Ensure that `HTTPDigest` only raises an exception when `auto_error is True`. PR [#2939](https://github.com/fastapi/fastapi/pull/2939) by [@arthurio](https://github.com/arthurio).

### Refactors