byte[] innerDigest = "inner_digest".getBytes();
            byte[] expectedOutput = "output_data".getBytes();
            byte[] buffer = new byte[expectedOutput.length + 10]; // Buffer with extra space

            when(mockMd5.digest()).thenReturn(innerDigest);
            when(mockMd5.digest(buffer, 0, expectedOutput.length)).thenAnswer(invocation -> {
                byte[] b = invocation.getArgument(0);

しかし、そうすると「最初の文字を大文字に変換するあのメソッド」を呼び出す必要があります。

それは `upper` でしたか？`uppercase` でしたか？`first_uppercase`？`capitalize`？

そして、古くからプログラマーの友人であるエディタで自動補完を試してみます。

関数の最初のパラメータ `first_name` を入力し、ドット（`.`）を入力してから、`Ctrl+Space` を押すと補完が実行されます。

しかし、悲しいことに、これはなんの役にも立ちません:

<img src="/img/python-types/image01.png">

### 型の追加 { #add-types }

先ほどのコードから一行変更してみましょう。

関数のパラメータである次の断片を、以下から:

```Python

        assertEquals("http://example.com/%D6sterreich", result);
    }

    @Test
    public void test_encodeUrl_fileProtocolWithSpecialChars() {
        // [ ] and % pass through; space would be encoded but %20 stays as-is (% is URL char)
        String result = DocumentUtil.encodeUrl("file:///data/[logs]/file%20name.txt");
        assertEquals("file:///data/[logs]/file%20name.txt", result);
    }

  /** Creates a new {@link Closer}. */
  public static Closer create() {
    return new Closer(SUPPRESSING_SUPPRESSOR);
  }

  @VisibleForTesting final Suppressor suppressor;

  // only need space for 2 elements in most cases, so try to use the smallest array possible
  private final Deque<Closeable> stack = new ArrayDeque<>(4);
  private @Nullable Throwable thrown;

  @VisibleForTesting

        FILE_SYSTEM,
        /** Protocol errors (invalid message, unsupported operation, etc.) */
        PROTOCOL,
        /** Resource errors (out of memory, disk space, etc.) */
        RESOURCE,
        /** Configuration errors */
        CONFIGURATION,
        /** Transient errors that may succeed on retry */
        TRANSIENT,
        /** Unknown or unclassified errors */

                // drop through...
            } catch (final LinkageError e) {
                // drop through...
            }
        }

        // assume custom type is in same class space as default
        final ClassLoader peer = defaultClazz.getClassLoader();
        if (peer != null) {
            try {
                return peer.loadClass(name);
            } catch (final Exception e) {

    private static final String COMMENT_CHARS = "#!";

    /** The list of possible key/value separators */
    private static final char[] SEPARATORS = new char[] {'=', ':'};

    /** The white space characters used as key/value separators. */
    private static final char[] WHITE_SPACE = new char[] {' ', '\t', '\f'};

    /**
     * Unless standard java props, use UTF-8
     */

    private static final String COMMENT_CHARS = "#!";

    /** The list of possible key/value separators */
    private static final char[] SEPARATORS = new char[] {'=', ':'};

    /** The white space characters used as key/value separators. */
    private static final char[] WHITE_SPACE = new char[] {' ', '\t', '\f'};

    /**
     * Unless standard java props, use UTF-8
     */

Shared scheme for long-form build options:

```
--<feature-name>-<detail>
```

Decisions on the short-form build options should be made on a case by case basis, since the space of available names is small.

### Internal properties

Internal properties MUST start with `org.gradle.internal.`

	return l.ctx
}

// Cancel function calls cancel() function
func (l LockContext) Cancel() {
	if l.cancel != nil {
		l.cancel()
	}
}

// newNSLock - return a new name space lock map.
func newNSLock(isDistErasure bool) *nsLockMap {
	nsMutex := nsLockMap{
		isDistErasure: isDistErasure,
	}
	if isDistErasure {
		return &nsMutex
	}
	nsMutex.lockMap = make(map[string]*nsLock)