response.dataLength = 1;
                // The response buffer points to the internal tmp buffer
                if (response.b != null && response.off < response.b.length) {
                    response.b[response.off] = 42; // Return byte value 42
                }
                return null;
            }
        }).when(smbFile).send(any(SmbComReadAndX.class), any(SmbComReadAndXResponse.class));

    private SmbComBlankResponse blank_resp = null;
    private DfsReferral dfsReferral = null; // For getDfsPath() and getServerWithDfs()

    /**
     * DFS resolver instance
     */
    protected static Dfs dfs;

    NtlmPasswordAuthentication auth; // Cannot be null
    SmbTree tree = null; // Initially null
    String unc; // Initially null; set by getUncPath; never ends with '/'

        // Test with null value
        String nullValue = null;
        OptionalEntity<String> emptyOptional = OptionalUtil.ofNullable(nullValue);

        assertFalse(emptyOptional.isPresent());
        assertEquals("default", emptyOptional.orElse("default"));

        // Test that empty optional returns null instead of throwing
        assertNull(emptyOptional.orElse(null));
    }

    @Test

        .isEqualTo("5 + 6 = 11");
    assertThat(Strings.lenientFormat("%s", null, null, null)).isEqualTo("null [null, null]");
    assertThat(Strings.lenientFormat(null, 5, 6)).isEqualTo("null [5, 6]");
    assertThat(Strings.lenientFormat("%s", (Object) null)).isEqualTo("null");
  }

  @J2ktIncompatible // TODO(b/319404022): Allow passing null array as varargs
  public void testLenientFormat_nullArrayVarargs() {

     */
    public SecureCredentialStorage(char[] masterPassword, byte[] salt) throws GeneralSecurityException {
        if (masterPassword == null || masterPassword.length == 0) {
            throw new IllegalArgumentException("Master password cannot be null or empty");
        }
        if (salt == null || salt.length != SALT_SIZE) {
            throw new IllegalArgumentException("Invalid salt");
        }

        this.salt = salt.clone();

        return this;
    }

    public void addArtifact(Artifact artifact) {
        if (artifacts == null) {
            artifacts = new LinkedHashSet<>();
        }

        artifacts.add(artifact);
    }

    public Set<Artifact> getArtifacts() {
        if (artifacts == null) {
            artifacts = new LinkedHashSet<>();
        }

        return artifacts;
    }

        assertEquals(-1, problem.getColumnNumber());

        problem = new DefaultProblem(null, null, null, -1, 42, null);
        assertEquals(42, problem.getColumnNumber());

        problem = new DefaultProblem(null, null, null, -1, Integer.MAX_VALUE, null);
        assertEquals(Integer.MAX_VALUE, problem.getColumnNumber());

        // this case is not specified, might also return -1

        notBlank(groupId, "groupId can neither be null, empty nor blank");
        notBlank(artifactId, "artifactId can neither be null, empty nor blank");
        notBlank(version, "version can neither be null, empty nor blank");

        return groupId + ":" + artifactId + ":" + version;
    }

    private static void notBlank(String str, String message) {
        final int strLen = str != null ? str.length() : 0;
        if (strLen > 0) {

    assertThat(entry("bar", 2).toString()).isEqualTo("bar x 2");
  }

  public void testToStringNull() {
    assertThat(entry(NE, 1).toString()).isEqualTo("null");
    assertThat(entry(NE, 2).toString()).isEqualTo("null x 2");
  }

  public void testEquals() {
    assertEquals(control("foo", 1), entry("foo", 1));
    assertEquals(control("bar", 2), entry("bar", 2));

    private final boolean lowerBoundInclusive;

    private final ArtifactVersion upperBound;

    private final boolean upperBoundInclusive;

    public static final Restriction EVERYTHING = new Restriction(null, false, null, false);

    public Restriction(
            ArtifactVersion lowerBound,
            boolean lowerBoundInclusive,
            ArtifactVersion upperBound,
            boolean upperBoundInclusive) {