* Removes and returns the least element of this queue, or returns {@code null} if the queue is
   * empty.
   */
  @CanIgnoreReturnValue
  public @Nullable E pollFirst() {
    return poll();
  }

  /**
   * Removes and returns the least element of this queue.
   *
   * @throws NoSuchElementException if the queue is empty
   */
  @CanIgnoreReturnValue
  public E removeFirst() {
    return remove();
  }

  /**
   * Creates a new, empty instance of the class under test.
   *
   * @return a new, empty map instance.
   * @throws UnsupportedOperationException if it's not possible to make an empty instance of the
   *     class under test.
   */
  protected abstract Map<K, V> makeEmptyMap() throws UnsupportedOperationException;

  /**
   * Creates a new, non-empty instance of the class under test.
   *

        MessageDigest hmac = Crypto.getHMACT64(key);
        byte[] result = hmac.digest(data);

        // Then
        assertNotNull(result);
        assertTrue(result.length > 0, "HMAC-T64 should produce non-empty result");
    }

    @Test
    @DisplayName("Should perform RC4 encryption/decryption")
    void testRC4() throws Exception {
        // Given
        byte[] key = "testkey123456789".getBytes(); // 16 bytes

                projectId,
                "Should extract project ID from fileModel when effectiveModel and rawModel are null");
    }

    /**
     * Test extractProjectId returns empty string when all models are null.
     */
    @Test
    void testExtractProjectIdAllModelsNull() throws Exception {
        Method extractProjectIdMethod =

configure<GraalVMExtension> {
  binaries {
    named("main") {
      imageName = "okcurl"
      mainClass = "okhttp3.curl.MainCommandLineKt"
    }
  }
}

mavenPublishing {
  configure(KotlinJvm(javadocJar = JavadocJar.Empty()))

      return this;
    }

    // Holder object for values that might be null and/or empty.
    static class ValueHolder {
      @Nullable String name;
      @Nullable Object value;
      @Nullable ValueHolder next;
    }

    /**
     * Holder object for values that cannot be null or empty (will be printed unconditionally). This

    )

    val call = client.newCall(Request(server.url("/")))
    call.execute().use { response ->
      assertThat(response.body.source().readUtf8()).isEqualTo("")
      assertThat(response.trailers()).isEqualTo(Headers.EMPTY)
    }
  }

  @Test
  fun readEmptyTrailersHttp1NonEmptyFixedLengthResponse() {
    server.enqueue(
      MockResponse
        .Builder()
        .body("Hello")
        .build(),
    )

        return false;
    }

    @Override
    public OptionalThing<TimeZone> findBusinessTimeZone(final ActionRuntime runtimeMeta, final RequestManager requestManager) {
        return OptionalObject.empty();
    }

    @Override
    public TimeZone getRequestedTimeZone(final RequestManager requestManager) { // not null
        return centralTimeZone; // you can change it if you like
    }

    @Override

     *
     * @return The type, never {@code null}.
     */
    String getType();

    /**
     * Gets the classifier of the constituent's artifact.
     *
     * @return The classifier or an empty string, never {@code null}.
     */
    String getClassifier();

    /**
     * Gets the version of the constituent's artifact.
     *
     * @return The version, never {@code null}.
     */

                        .orElse(false);
        runtime.registerData("editable", editable);
        runtime.registerData("editableClass", editable ? StringUtil.EMPTY : "disabled");
        runtime.registerData("fesenType", fessConfig.getFesenType());
        final String forumLink = systemHelper.getForumLink();
        if (StringUtil.isNotBlank(forumLink)) {