// GetObjectAttributes ...
func (api objectAPIHandlers) getObjectAttributesHandler(ctx context.Context, objectAPI ObjectLayer, bucket, object string, w http.ResponseWriter, r *http.Request) {
	opts, valid := getAndValidateAttributesOpts(ctx, w, r, bucket, object)
	if !valid {
		return
	}

	var s3Error APIErrorCode
	if opts.VersionID != "" {
		s3Error = checkRequestAuthType(ctx, r, policy.GetObjectVersionAttributesAction, bucket, object)

   * prohibitively expensive to test for automated runs. This method tests specific four-byte cases.
   */
  public void testIsWellFormed_4BytesSamples() {
    // Valid 4 byte.
    assertWellFormed(0xF0, 0xA4, 0xAD, 0xA2);
    // Bad trailing bytes
    assertNotWellFormed(0xF0, 0xA4, 0xAD, 0x7F);
    assertNotWellFormed(0xF0, 0xA4, 0xAD, 0xC0);
    // Special cases for byte2

        if (argValue == null || argValue.isEmpty()) {
            throw new EmptyArgumentException(argName, "ECL0013", asArray(argName));
        }
    }

    /**
     * Asserts that the index is valid.
     *
     * @param argName
     *            The name of the argument that must not be {@code null}.
     * @param argValue
     *            The value of the index.
     * @param arraySize

                "path",
                "item_id"
            ],
            "msg": "value is not a valid integer",
            "type": "type_error.integer"
        }
    ]
}
```

以下のようなテキスト版を取得します:

```
1 validation error
path -> item_id
  value is not a valid integer (type=type_error.integer)
```

#### `RequestValidationError`と`ValidationError`

/// warning | 注意

		Name:   name,
		Method: Deflate,
	}
	return w.CreateHeader(header)
}

// detectUTF8 reports whether s is a valid UTF-8 string, and whether the string
// must be considered UTF-8 encoding (i.e., not compatible with CP-437, ASCII,
// or any other common encoding).
func detectUTF8(s string) (valid, require bool) {
	for i := 0; i < len(s); {
		r, size := utf8.DecodeRuneInString(s[i:])
		i += size

                return new SmbTreeHandleImpl(loc, this);
            }

            return connectHost(loc, loc.getServerWithDfs());
        }

    }

    /**
     * @return whether we have a valid tree connection
     */
    @SuppressWarnings("resource")
    public synchronized boolean isConnected() {
        final SmbTreeImpl t = getTreeInternal();
        return t != null && t.isConnected();
    }

@J2ktIncompatible
@GwtIncompatible
public class ListenableFutureTask<V extends @Nullable Object> extends FutureTask<V>
    implements ListenableFuture<V> {
  // TODO(cpovirk): explore ways of making ListenableFutureTask final. There are some valid reasons
  // such as BoundedQueueExecutorService to allow extends but it would be nice to make it final to
  // avoid unintended usage.

  // The execution list to hold our listeners.

    @Test
    @DisplayName("Should handle interface method contracts")
    void testMethodContracts() {
        // The interface should allow for various implementations
        // Test that methods can return any valid values

        // Names can be any string
        when(mockNetbiosName.getName()).thenReturn("ANYNAME");
        assertNotNull(mockNetbiosName.getName());

        // Scope can be null or any string

        m.ptype = 0; // Request type
        NdrBuffer buf = new NdrBuffer(new byte[1024], 0);
        m.encode(buf);

        buf.setIndex(0);
        // Decode will throw exception as ptype 0 is not a valid response type
        assertThrows(NdrException.class, () -> m.decode(buf));
    }

    @Test
    void testRoundTripEncodeDecodeForResponseType() throws Exception {

But this example is still valid and it shows how to interact with the internal components.

///

We can also use this same approach to access the request body in an exception handler.