@BeforeEach
    void setUp() {
        handler = new Handler(null);
    }

    @Nested
    @DisplayName("Constructor Tests")
    class ConstructorTests {

        @Test
        @DisplayName("Should create handler with null context")
        void testConstructorWithNullContext() {
            // When
            Handler testHandler = new Handler(null);

            // Then
            assertNotNull(testHandler);

    protected void assertObjectNotNull(String variableName, Object value) {
        if (variableName == null) {
            String msg = "The value should not be null: variableName=null value=" + value;
            throw new IllegalArgumentException(msg);
        }
        if (value == null) {
            String msg = "The value should not be null: variableName=" + variableName;
            throw new IllegalArgumentException(msg);
        }

     *
     * @param in the input file (must not be {@literal null})
     * @param inputEncoding the input file encoding (must not be {@literal null} or empty)
     * @param out the output file (must not be {@literal null})
     * @param outputEncoding the output file encoding (must not be {@literal null} or empty)
     * @return the number of characters copied
     */

    if (entry != null && entry.key == key) {
      return entry.value;
    }
    entry = cacheEntry2;
    if (entry != null && entry.key == key) {
      // Promote second cache entry to first so the access pattern
      // [K1, K2, K1, K3, K1, K4...] still hits the cache half the time.
      addToCache(entry);
      return entry.value;
    }
    return null;
  }

  @Override
  void clearCache() {
    super.clearCache();

            }
            return userCode;
        }).orElse(null);
    }

    /**
     * Extracts the user code from the user bean stored in the session.
     * This method retrieves the authenticated user information and creates an encrypted user code.
     *
     * @param request the HTTP servlet request
     * @return the user code from the user bean, or null if not found or invalid
     */

                    e);

            return null;
        }

        return artifactFactory.createPluginArtifact(plugin.getGroupId(), plugin.getArtifactId(), versionRange);
    }

    public ArtifactRepositoryPolicy buildArtifactRepositoryPolicy(RepositoryPolicy policy) {
        boolean enabled = true;

        String updatePolicy = null;

        String checksumPolicy = null;

        if (policy != null) {

   * | `http://square`               | null                 |
   * | `http://co.uk`                | null                 |
   * | `http://localhost`            | null                 |
   * | `http://127.0.0.1`            | null                 |
   */
  fun topPrivateDomain(): String? =
    if (host.canParseAsIpAddress()) {
      null
    } else {

        NetServerFileEntryAdapterIterator itr = new NetServerFileEntryAdapterIterator(parent, delegate, null);

        // Act & Assert
        assertTrue(itr.hasNext(), "Should have first element ready");
        SmbResource r1 = itr.next();
        assertNotNull(r1, "First adapted resource must not be null");
        // For workgroup/server entries, names end with '/'

                    state = 0;
                    thread = null;
                    throw new TransportException("Connection timeout");
                case 2:
                    if (te != null) { /* doConnect throw Exception */
                        state = 4; /* error */
                        thread = null;
                        throw te;
                    }

        try {
            final SmbFileHandleImpl h = this.handle;
            if (h != null) {
                h.close();
            }
        } catch (final SmbException se) {
            throw seToIoe(se);
        } finally {
            this.tmp = null;
            this.handle = null;
            if (this.unsharedFile) {
                this.file.close();
            }
        }
    }