*            A disposable resource. Must not be {@literal null}.
     */
    public static synchronized void addFirst(final Disposable disposable) {
        assertArgumentNotNull("disposable", disposable);
        disposables.addFirst(disposable);
    }

    /**
     * Unregisters a disposable resource.
     *
     * @param disposable
     *            A disposable resource. Must not be {@literal null}.
     */

@Deprecated(since = "4.0.0")
interface ModelCacheTag<T> {

    /**
     * Gets the name of the tag.
     *
     * @return The name of the tag, must not be {@code null}.
     */
    String getName();

    /**
     * Gets the type of data associated with this tag.
     *
     * @return The type of data, must not be {@code null}.
     */
    Class<T> getType();

    /**

        supplied[0] = 1;
        supplied[1] = 2;

        // Release must not throw and must zero the supplied array
        assertDoesNotThrow(() -> impl.releaseBuffer(supplied));
        for (byte value : supplied) {
            assertEquals(0, value, "Released buffer must be zeroed even if not cached");
        }

        // Since cache cannot store, getBuffer must create a new buffer of configured size
        byte[] got = impl.getBuffer();

     *
     * @param context
     *            The context in which to parse the spec. Must not be {@literal null}.
     * @param spec
     *            A string to be parsed as a <code>URL</code>. Must not be {@literal null} or empty.
     * @return A <code>URL</code>.
     */
    public static URL create(final URL context, final String spec) {

    /**
     * Creates a {@link org.apache.maven.api.Project} from a POM file.
     *
     * @param session the {@link Session}, must not be {@code null}
     * @param source The {@link Source}, must not be {@code null}
     * @throws ProjectBuilderException if the project cannot be created
     * @throws IllegalArgumentException if an argument is {@code null} or invalid

   * does not include "was cancelled." To be explicit: If this method returns a non-null value,
   * then:
   *
   * <ul>
   *   <li>{@code isDone()} must return {@code true}
   *   <li>{@code isCancelled()} must return {@code false}
   *   <li>{@code get()} must not block, and it must throw an {@code ExecutionException} with the
   *       return value of this method as its cause
   * </ul>
   */
  public static
      Throwable

            int m = f.getModifiers();

            assertTrue(Modifier.isPublic(m), e.getKey() + " must be public");
            assertTrue(Modifier.isStatic(m), e.getKey() + " must be static");
            assertTrue(Modifier.isFinal(m), e.getKey() + " must be final");
            assertEquals(String.class, f.getType(), e.getKey() + " must be String");
            assertEquals(e.getValue(), f.get(null), e.getKey() + " value mismatch");
        }

     *
     * @param parser
     *            The {@link SAXParser} to use. Must not be {@literal null}.
     * @param inputSource
     *            The {@link InputSource} containing the content to be parsed. Must not be {@literal null}.
     * @param handler
     *            The SAX {@link DefaultHandler} to use. Must not be {@literal null}.
     */

	}

	// There are two possibilities:
	// - We use a KMS -> There must be non-empty key ID and a KMS data key.
	// - We use a K/V -> There must be no key ID and no KMS data key.
	// Otherwise, the caller has passed an invalid argument combination.
	if keyID == "" && len(kmsKey) != 0 {
		logger.CriticalIf(context.Background(), errors.New("The key ID must not be empty if a KMS data key is present"))
	}

     */
    protected AssertionUtil() {
    }

    /**
     * Asserts that the argument is not <code>null</code>.
     *
     * @param argName
     *            The name of the argument that must not be {@code null}.
     * @param argValue
     *            The value of the argument.
     * @throws NullArgumentException
     *             If the argument is <code>null</code>.
     */