* @return the same list if validation passes, or {@code null} if input was {@code null}
     * @throws IllegalArgumentException if the list contains duplicate repositories
     * @throws IllegalArgumentException if the list contains null repository entries
     */
    default List<RemoteRepository> validate(List<RemoteRepository> repositories) {
        if (repositories == null) {

    assertThat(DoubleMath.mean(ImmutableList.of(1.1))).isWithin(1.0e-10).of(1.1);
    assertThrows(IllegalArgumentException.class, () -> DoubleMath.mean(ImmutableList.<Double>of()));
    assertThrows(
        IllegalArgumentException.class, () -> DoubleMath.mean(ImmutableList.of(Double.NaN)));
    assertThrows(
        IllegalArgumentException.class,
        () -> DoubleMath.mean(ImmutableList.of(Double.POSITIVE_INFINITY)));
  }

                throw new IllegalArgumentException("Unrecognized entries in maven.config (" + configFile + ") file: "
                        + options.goals().get());
            }
            return options;
        } catch (ParseException e) {
            throw new IllegalArgumentException(

   *
   * @throws IllegalArgumentException if duplicate keys or values are added
   */
  public static <K, V> ImmutableBiMap<K, V> of(K k1, V v1, K k2, V v2) {
    return RegularImmutableBiMap.fromEntries(entryOf(k1, v1), entryOf(k2, v2));
  }

  /**
   * Returns an immutable map containing the given entries, in order.
   *
   * @throws IllegalArgumentException if duplicate keys or values are added
   */

    assertEquals("gmail.com", hp.getHost());
    assertTrue(hp.hasPort());
    assertEquals(81, hp.getPort());

    assertThrows(IllegalArgumentException.class, () -> HostAndPort.fromParts("gmail.com:80", 81));

    assertThrows(IllegalArgumentException.class, () -> HostAndPort.fromParts("gmail.com", -1));
  }

  public void testFromHost() {
    HostAndPort hp = HostAndPort.fromHost("gmail.com");

    assertEquals("gmail.com", hp.getHost());
    assertTrue(hp.hasPort());
    assertEquals(81, hp.getPort());

    assertThrows(IllegalArgumentException.class, () -> HostAndPort.fromParts("gmail.com:80", 81));

    assertThrows(IllegalArgumentException.class, () -> HostAndPort.fromParts("gmail.com", -1));
  }

  public void testFromHost() {
    HostAndPort hp = HostAndPort.fromHost("gmail.com");

    }

    @Test
    @DisplayName("Null options cause IllegalArgumentException when retrieving entries (JAAS requires non-null options)")
    void nullOptions_throwOnAccess() {
        // Arrange
        StaticJAASConfiguration cfg = new StaticJAASConfiguration(null);

        // Act + Assert
        assertThrows(IllegalArgumentException.class, () -> cfg.getAppConfigurationEntry("any"),

    }

    @Test
    public void testDurableHandleReconnectInvalidFileId() {
        assertThrows(IllegalArgumentException.class, () -> {
            new DurableHandleReconnect(new byte[8]); // Wrong length
        });

        assertThrows(IllegalArgumentException.class, () -> {
            new DurableHandleReconnect(new byte[20]); // Wrong length
        });
    }

    @Test

    private void validateParameters() {
        if (min < 0) {
            throw new IllegalArgumentException("The min parameter cannot be negative.");
        }
        if (max < 0) {
            throw new IllegalArgumentException("The max parameter cannot be negative.");
        }
        if (max < min) {
            throw new IllegalArgumentException("The length cannot be negative.");
        }
    }

        int i;
        int len;
        if (buf.length < TOK_ID_SIZE + MECH_OID_LEN_SIZE) {
            throw new IllegalArgumentException();
        }
        // TOK_ID
        for (i = 0; i < TOK_ID.length; i++) {
            if (TOK_ID[i] != buf[i]) {
                throw new IllegalArgumentException();
            }
        }
        // MECH_OID_LEN
        len = 0xff00 & buf[i] << 8;
        i++;