*/
    boolean verifySignature(byte[] buffer, int i, int size);

    /**
     * Checks if signature verification failed.
     *
     * @return whether signature verification failed
     */
    boolean isVerifyFailed();

    /**
     * Checks if the response indicates an error.
     *
     * @return whether the response is an error
     */
    boolean isError();

    /**

    /*
     * We can't simply cast the result of `RegularImmutableMap.get` to V because of a bug in our
     * nullness checker (resulting from https://github.com/jspecify/checker-framework/issues/8).
     */
    if (result == null) {
      return null;
    } else {
      return (V) result;
    }
  }

  @Override

   * fact the static type of {@link Throwable} is occasionally justified even for a method with no
   * {@code throws} clause: Some such methods can in fact throw a checked exception (e.g., by
   * calling code written in Kotlin).) Typically, we want to let a {@link Throwable} from such a
   * method propagate untouched, just as we'd typically let it do for a non-reflective call.

	lastShardSize := ceilFrac(lastBlockSize, int64(fi.Erasure.DataBlocks))
	return numShards*fi.shardSize() + lastShardSize
}

// ShallowCopy - copies minimal information for READ MRF checks.
func (fi FileInfo) ShallowCopy() (n FileInfo) {
	n.Volume = fi.Volume
	n.Name = fi.Name
	n.VersionID = fi.VersionID
	n.Deleted = fi.Deleted
	n.Erasure = fi.Erasure
	return n
}

    }

    synchronized void close() throws IOException {
      out.close();
    }

    synchronized void flush() throws IOException {
      out.flush();
    }

    /**
     * Checks if writing {@code len} bytes would go over threshold, and switches to file buffering
     * if so.
     */
    @GuardedBy("this")
    void update(int len) throws IOException {

            return (Map<String, Object>) value;
        }
        return null;
    }

    /**
     * Checks if the map contains the specified key and the value is not null.
     *
     * @param map The source map
     * @param key The key to check
     * @return true if the key exists and its value is not null
     */

     * only under concurrent modification).
     *
     * To access these fields when you know that they are not null, call the pred() and succ()
     * methods, which perform null checks before returning the fields.
     */
    private @Nullable AvlNode<E> pred;
    private @Nullable AvlNode<E> succ;

    AvlNode(@ParametricNullness E elem, int elemCount) {
      checkArgument(elemCount > 0);

sleep 10

echo "Verifying ETag for all objects"
./s3-check-md5 -versions -access-key minio -secret-key minio123 -endpoint http://127.0.0.1:9001/ -bucket bucket
./s3-check-md5 -versions -access-key minio -secret-key minio123 -endpoint http://127.0.0.1:9002/ -bucket bucket
./s3-check-md5 -versions -access-key minio -secret-key minio123 -endpoint http://127.0.0.1:9003/ -bucket bucket

   */
  fun timeoutEarlyExit() {
    check(!timeoutEarlyExit)
    timeoutEarlyExit = true
    timeout.exit()
  }

  fun upgradeToSocket() {
    timeoutEarlyExit()

    withLock {
      check(exchange != null)
      check(!socketSinkOpen && !socketSourceOpen)
      check(!requestBodyOpen)
      check(responseBodyOpen)
      responseBodyOpen = false
      socketSinkOpen = true

如此一來我們就能「參數化」相依，現在它內部含有 `"bar"`，作為屬性 `checker.fixed_content`。

## 將實例作為相依使用 { #use-the-instance-as-a-dependency }

然後，我們可以在 `Depends(checker)` 中使用這個 `checker`，而不是 `Depends(FixedContentQueryChecker)`，因為相依是那個實例 `checker`，不是類別本身。

當解析相依時，**FastAPI** 會像這樣呼叫這個 `checker`：

```Python
checker(q="somequery")
```

...並將其回傳值，作為相依的值，以參數 `fixed_content_included` 傳給我們的「路徑操作函式」：