* Even if empty string, treated as empty plainly. So "IF pmb != null" is false if empty.
     * @param hostname The parameter value of hostname. (NotNull)
     */
    public void setHostname(String hostname) {
        registerVariable("hostname", hostname);
    }

    /**
     * Set the value of clustername, used in parameter comment. <br>

        assertArrayEquals(key, transport.getServerEncryptionKey());
        verify(transport).getServerEncryptionKey();

        // Empty array
        byte[] empty = new byte[0];
        when(transport.getServerEncryptionKey()).thenReturn(empty);
        assertArrayEquals(empty, transport.getServerEncryptionKey());

        // Null
        when(transport.getServerEncryptionKey()).thenReturn(null);

  private val headers: Headers = Headers.EMPTY

  @Test fun testIPv4() {
    val socket =
      MockWebServerSocket(
        FakeSocket(
          localAddress = InetAddress.getByAddress("127.0.0.1", byteArrayOf(127, 0, 0, 1)),
          localPort = 80,
        ),
      )
    val request = RecordedRequest(DEFAULT_REQUEST_LINE_HTTP_1, headers, emptyList(), 0, ByteString.EMPTY, 0, 0, socket)

   *     // operate on tuple
   *   }
   * }
   * }
   *
   * <p>Note that if any input set is empty, the Cartesian product will also be empty. If no sets at
   * all are provided (an empty list), the resulting Cartesian product has one element, an empty
   * list (counter-intuitive, but mathematically consistent).
   *

     *            The property name. Must not be {@literal null} or empty string
     * @return Whether the {@link PropertyDesc} exists
     */
    boolean hasPropertyDesc(String propertyName);

    /**
     * Returns the {@link PropertyDesc}.
     *
     * @param propertyName
     *            The property name. Must not be {@literal null} or empty string
     * @return {@link PropertyDesc}
     */

            if (input == null || input.isEmpty()) {
                assertEquals(0, result.length, "Null or empty input should produce empty array");
            } else {
                assertTrue(result.length > 0, "Non-empty input should produce non-empty array");
            }
        }
    }

    @Nested
    @DisplayName("Unicode and ASCII Encoding")
    class UnicodeAndASCIITests {

        fileTypeHelper.add("", "empty");
        assertEquals("empty", fileTypeHelper.get(""));
    }

    public void test_add_withNullFiletype() {
        fileTypeHelper.add("test/null", null);
        assertEquals("others", fileTypeHelper.get("test/null"));
    }

    public void test_add_withEmptyFiletype() {
        fileTypeHelper.add("test/empty", "");

 * @since 22.0
 */
@GwtCompatible
@Immutable
public final class ImmutableLongArray implements Serializable {
  private static final ImmutableLongArray EMPTY = new ImmutableLongArray(new long[0]);

  /** Returns the empty array. */
  public static ImmutableLongArray of() {
    return EMPTY;
  }

  /** Returns an immutable array containing a single value. */
  public static ImmutableLongArray of(long e0) {

 * @since 22.0
 */
@GwtCompatible
@Immutable
public final class ImmutableIntArray implements Serializable {
  private static final ImmutableIntArray EMPTY = new ImmutableIntArray(new int[0]);

  /** Returns the empty array. */
  public static ImmutableIntArray of() {
    return EMPTY;
  }

  /** Returns an immutable array containing a single value. */
  public static ImmutableIntArray of(int e0) {

            "requires": "1.0.3"
          }
        },
        {
          "group": "com.google.guava",
          "module": "listenablefuture",
          "version": {
            "requires": "9999.0-empty-to-avoid-conflict-with-guava"
          }
        },
        {
          "group": "org.jspecify",
          "module": "jspecify",
          "version": {
            "requires": "${jspecify.version}"
          }