// `items` is a list of request-priorities.
  repeated PriorityLevelConfiguration items = 2;
}

// PriorityLevelConfigurationReference contains information that points to the "request-priority" being used.
message PriorityLevelConfigurationReference {
  // `name` is the name of the priority level configuration being referenced
  // Required.
  optional string name = 1;
}

```Python hl_lines="2-5  15  21"
{!../../docs_src/handling_errors/tutorial006.py!}
```

errors.invalid_header_for_request_file=Invalid header: {0}
errors.could_not_delete_logged_in_user=Could not delete logged in user.
errors.unauthorized_request=Unauthorized request.
errors.failed_to_print_thread_dump=Failed to print thread dump.
errors.file_is_not_supported={0} is not supported.
errors.plugin_file_is_not_found={0} is not found.
errors.failed_to_install_plugin=Failed to install {0}.

errors.invalid_header_for_request_file=Invalid header: {0}
errors.could_not_delete_logged_in_user=Could not delete logged in user.
errors.unauthorized_request=Unauthorized request.
errors.failed_to_print_thread_dump=Failed to print thread dump.
errors.file_is_not_supported={0} is not supported.
errors.plugin_file_is_not_found={0} is not found.
errors.failed_to_install_plugin=Failed to install {0}.

  private final transient SortedMap<K, V> sortedDelegate;

  // The comparator used by this map.  It's the same as that of sortedDelegate,
  // except that when sortedDelegate's comparator is null, it points to a
  // non-null instance of Ordering.natural().
  // (cpovirk: Is sortedDelegate's comparator really ever null?)
  // The comparator will likely also differ because of our nullAccepting hack.

-flexbox!important;display:inline-flex!important}}@media print{.d-print-none{display:none!important}.d-print-inline{display:inline!important}.d-print-inline-block{display:inline-block!important}.d-print-block{display:block!important}.d-print-table{display:table!important}.d-print-table-row{display:table-row!important}.d-print-table-cell{display:table-cell!important}.d-print-flex{display:-ms-flexbox!important;display:flex!important}.d-print-inline-flex{display:-ms-inline-flexbox!important;display...

We create an `HTTPException` that we can reuse (`raise`) later at several points.

In this exception, we include the scopes required (if any) as a string separated by spaces (using `scope_str`). We put that string containing the scopes in the `WWW-Authenticate` header (this is part of the spec).

        }

        if (logger.isDebugEnabled()) {
            logger.debug("metadata: {}", metadata);
        }

        return metadata;
    }

    // workaround: Tika does not have extention points.
    protected class TikaDetectParser extends CompositeParser {
        private static final long serialVersionUID = 1L;

        /**
         * The type detector used by this parser to auto-detect the type of a

05B0..05B9    ; valid                                  # 1.1  HEBREW POINT SHEVA..HEBREW POINT HOLAM
05BA          ; valid                                  # 5.0  HEBREW POINT HOLAM HASER FOR VAV
05BB..05BD    ; valid                                  # 1.1  HEBREW POINT QUBUTS..HEBREW POINT METEG
05BE          ; valid                  ;      ; NV8    # 1.1  HEBREW PUNCTUATION MAQAF

```Python
with open("./somefile.txt") as f:
    contents = f.read()
    print(contents)
```

その後の`open("./somefile.txt")`は「コンテキストマネージャ」と呼ばれるオブジェクトを作成します。

`with`ブロックが終了すると、例外があったとしてもファイルを確かに閉じます。

`yield`を依存関係を作成すると、**FastAPI** は内部的にそれをコンテキストマネージャに変換し、他の関連ツールと組み合わせます。