@Override
  protected void setUp() throws Exception {
    super.setUp();

    handler = new TestLogHandler();

    // You could also apply it higher up the Logger hierarchy than this
    ExampleClassUnderTest.logger.addHandler(handler);

    ExampleClassUnderTest.logger.setUseParentHandlers(false); // optional

    stack.addTearDown(
        new TearDown() {
          @Override

        assertTrue(queryParseException instanceof java.io.Serializable);
    }

    public void test_inheritanceHierarchy() {
        // Test the inheritance hierarchy
        ParseException parseException = new ParseException("Hierarchy test");
        QueryParseException queryParseException = new QueryParseException(parseException);

        // Verify inheritance chain

        assertEquals(message, exception.getMessage());
        assertNull(exception.getCause());
    }

    public void test_instanceOf() {
        // Test inheritance hierarchy
        UnsupportedSearchException exception = new UnsupportedSearchException("test");

        assertTrue(exception instanceof UnsupportedSearchException);
        assertTrue(exception instanceof FessSystemException);

 * with {@link #where} and types are resolved using {@link #resolveType}.
 *
 * <p>Note that usually type mappings are already implied by the static type hierarchy (for example,
 * the {@code E} type variable declared by class {@code List} naturally maps to {@code String} in
 * the context of {@code class MyStringList implements List<String>}). In such case, prefer to use

    }

    /**
     * Represents a crawl request containing a URL and its depth in the crawling hierarchy.
     * Used for managing recursive crawling operations.
     */
    private static class CrawlRequest {
        /** The URL to be crawled. */
        private final String url;
        /** The depth of this URL in the crawling hierarchy. */
        private final int depth;

        /**

        // Setup
        final String message = "Test inheritance hierarchy";
        final VaMessenger<FessMessages> messageCode = messages -> messages.addErrorsInvalidQueryUnknown(UserMessages.GLOBAL_PROPERTY_KEY);

        // Execute
        final InvalidQueryException exception = new InvalidQueryException(messageCode, message);

        // Verify inheritance hierarchy
        assertTrue(exception instanceof FessSystemException);

            identifiers.put(ident, method);
          }
        }
      }
    }
    return ImmutableList.copyOf(identifiers.values());
  }

  /** Global cache of classes to their flattened hierarchy of supertypes. */
  private static final LoadingCache<Class<?>, ImmutableSet<Class<?>>> flattenHierarchyCache =
      CacheBuilder.newBuilder()
          .weakKeys()
          .build(
              CacheLoader.from(

import java.util.Iterator;
import java.util.NoSuchElementException;

import org.codelibs.core.exception.ClUnsupportedOperationException;

/**
 * An {@link Iterator} that iterates through the hierarchy of class loaders towards their parent class loaders.
 * <p>
 * Usage example:
 * </p>
 *
 * <pre>
 * import static org.codelibs.core.lang.ClassLoaderIterator.*;
 *
 * ClassLoader classLoader = ...;

import java.util.NoSuchElementException;

import org.codelibs.core.exception.ClUnsupportedOperationException;
import org.codelibs.core.message.MessageFormatter;

/**
 * An {@link Iterator} that iterates through the inheritance hierarchy of a class towards its superclasses.
 * <p>
 * Usage example:
 * </p>
 *
 * <pre>
 * import static org.codelibs.core.lang.ClassIterator.*;
 *
 * Class&lt;?&gt; someClass = ...;

        } catch (Exception e) {
            fail("Should have caught CommandExecutionException");
        }
    }

    public void test_exceptionInheritance() {
        // Test exception inheritance hierarchy
        CommandExecutionException exception = new CommandExecutionException("Test");

        // Check inheritance chain
        assertTrue(exception instanceof CommandExecutionException);