return Violation.accept(member, "${rejection.getHumanExplanation()}. Reason for accepting this: <b>$acceptationReason</b>")
        } else if (member instanceof JApiMethod && UpgradedProperties.shouldAcceptForUpgradedProperty(member, rejection, context)) {
            seenApiChanges.add(change)
            return Violation.accept(member, "${rejection.getHumanExplanation()}. Reason for accepting this: <b>Upgraded property</b>")

        normalizedPath = noUncValidator.validatePath("////server//share");
        assertEquals("\\server\\share", normalizedPath);

        // To properly test UNC rejection, we would need to fix the normalization logic
        // to preserve the leading double backslash for UNC paths
    }

    @Test
    public void testInvalidUncPath() throws Exception {

 * but given that any public suffix may become a host without warning, it is better to err on the
 * side of permissiveness and thus avoid spurious rejection of valid sites. Of course, to actually
 * determine addressability of any host, clients of this class will need to perform their own DNS
 * lookups.
 *
 * <p>During construction, names are normalized in two ways:
 *

    return (ImmutableSet<E>) RegularImmutableSet.EMPTY;
  }

  /**
   * Returns an immutable set containing the given element. Preferred over {@link
   * Collections#singleton} for code consistency, {@code null} rejection, and because the return
   * type conveys the immutability guarantee.
   */
  public static <E> ImmutableSet<E> of(E e1) {
    return new SingletonImmutableSet<>(e1);
  }

  /*

    new NullPointerTester().testAllPublicInstanceMethods(Prepender.method("staticMethod"));
  }

  @Retention(RetentionPolicy.RUNTIME)
  private @interface NotBlank {}

  /** Class for testing constructor, static method and instance method. */
  @SuppressWarnings("unused") // most are called by reflection
  private static class Prepender {

    private final String prefix;
    private final int times;

| `LanguageHelper` | `org.codelibs.fess.helper` | Language detection and validation |
| `SystemHelper` | `org.codelibs.fess.helper` | UI language dropdown builder |
| `FessUserLocaleProcessProvider` | `org.codelibs.fess.mylasta.direction.sponsor` | User locale detection |

## Language Detection and Selection

### User Interface Language

Fess determines the UI language in this order:

- **I/O Operations** (`org.codelibs.core.io`) - File handling, resource management, stream utilities, and traversal utilities for efficient resource processing
- **Reflection** (`org.codelibs.core.lang`) - Class loading, method/field access, type introspection utilities, and generics support

        this.rssCapable = checkRSSCapability();
        if (rssCapable) {
            this.capability |= Smb2ChannelCapabilities.NETWORK_INTERFACE_CAP_RSS;
        }

        // RDMA capability would require OS-specific detection
        this.rdmaCapable = false;
    }

    /**
     * Get the interface index
     *
     * @return interface index
     */
    public int getInterfaceIndex() {
        return interfaceIndex;
    }

    }

    @Test
    @DisplayName("Should return correct TID from TreeConnectResponse interface")
    void testGetTid() throws Exception {
        // Given - set tree ID using reflection
        Method setTreeIdMethod = ServerMessageBlock2.class.getDeclaredMethod("setTreeId", int.class);
        setTreeIdMethod.setAccessible(true);
        setTreeIdMethod.invoke(response, 12345);

        // When

 * for configuring the extraction parameters and handling the underlying complexities of content processing,
 * such as MIME type detection, extractor selection, and content length validation.
 * </p>
 *
 * <p>
 * Example usage:
 * </p>
 *
 * <pre>
 * {@code
 * try (InputStream in = new FileInputStream("example.pdf")) {