.append(",serverChallenge=");
        if (serverChallenge == null) {
            ret.append("null");
        } else {
            ret.append(Hexdump.toHexString(serverChallenge, 0, serverChallenge.length * 2));
        }
        ret.append(",signingKey=");
        if (signingKey == null) {
            ret.append("null");
        } else {

        sb.append("   layout: ").append(layout != null ? layout : "none").append('\n');

        if (snapshots != null) {
            sb.append("snapshots: [enabled => ").append(snapshots.isEnabled());
            sb.append(", update => ").append(snapshots.getUpdatePolicy()).append("]\n");
        }

        if (releases != null) {
            sb.append(" releases: [enabled => ").append(releases.isEnabled());

    ImmutableList.Builder<String> builder = ImmutableList.builder();
    assertThrows(NullPointerException.class, () -> builder.add((String) null));

    assertThrows(NullPointerException.class, () -> builder.add((String[]) null));

    assertThrows(NullPointerException.class, () -> builder.add("a", null, "b"));
  }

  public void testBuilderAddAllHandlesNullsCorrectly() {
    {

        if (authRealm != null) {
            addFieldToSource(sourceMap, "authRealm", authRealm);
        }
        if (createdBy != null) {
            addFieldToSource(sourceMap, "createdBy", createdBy);
        }
        if (createdTime != null) {
            addFieldToSource(sourceMap, "createdTime", createdTime);
        }
        if (hostname != null) {

  public void testAddAtIndex_nullSupported() {
    getList().add(0, null);
    expectAdded(0, (E) null);
  }

  @ListFeature.Require(SUPPORTS_ADD_WITH_INDEX)
  @CollectionFeature.Require(absent = ALLOWS_NULL_VALUES)
  public void testAddAtIndex_nullUnsupported() {
    assertThrows(NullPointerException.class, () -> getList().add(0, null));
    expectUnchanged();

     * If this method returns <code>null</code> the <code>SmbAuthException</code> that triggered the authenticator check will simply be rethrown. The default implementation returns <code>null</code>.
     * @return the authentication credentials or null if none available
     */
    protected NtlmPasswordAuthentication getNtlmPasswordAuthentication() {
        return null;
    }

            getMap()
                .computeIfAbsent(
                    null,
                    k -> {
                      assertNull(k);
                      return v3();
                    }));
    expectUnchanged();
    expectNullKeyMissingWhenNullKeysUnsupported(
        "Should not contain null key after unsupported computeIfAbsent(null, function)");
  }

        if (deploymentTimestamp == null) {
            deploymentTimestamp = getUtcDateFormatter().format(new Date());
        }
        return deploymentTimestamp;
    }

    @Override
    protected String constructVersion(Versioning versioning, String baseVersion) {
        String version = null;
        Snapshot snapshot = versioning.getSnapshot();
        if (snapshot != null) {

    @Nested
    @DisplayName("Invalid input – null file handling")
    class InvalidPath {
        @Test
        void acceptWithNullThrows() {
            SmbFileFilter throwOnNull = new SmbFileFilter() {
                @Override
                public boolean accept(SmbFile file) throws SmbException {
                    if (file == null) {
                        throw new SmbException("null file");
                    }

    val sslContext2 = get().newSSLContext()
    sslContext2.init(null, null, null)
    val sslSocketFactory2 = sslContext2.socketFactory
    val trustManagerFactory =
      TrustManagerFactory.getInstance(
        TrustManagerFactory.getDefaultAlgorithm(),
      )
    trustManagerFactory.init(null as KeyStore?)
    val trustManager = trustManagerFactory.trustManagers[0] as X509TrustManager
    client =