// Test characters just outside ranges that are not valid
        assertFalse(CharUtil.isUrlChar('`')); // backtick (just before 'a')
        assertFalse(CharUtil.isUrlChar('{')); // left brace (just after 'z')
        assertFalse(CharUtil.isUrlChar('^')); // caret (before 'a' range)
        assertFalse(CharUtil.isUrlChar('|')); // pipe (not in valid set)
    }

mvn test                       # Run tests
mvn formatter:format           # Format code
mvn license:format             # Update license headers
```

### Code Style

- 4 spaces (no tabs)
- Opening brace on same line
- Max line length: 120
- JavaDoc required for public APIs
- License headers required

### Testing

**Structure**: `src/test/java/org/codelibs/fess/crawler/`

TypeName form of the LiteralType appears as an operand between the
<a href="#Keywords">keyword</a> and the opening brace of the block
of an "if", "for", or "switch" statement, and the composite literal
is not enclosed in parentheses, square brackets, or curly braces.
In this rare case, the opening brace of the literal is erroneously parsed
as the one introducing the block of statements. To resolve the ambiguity,

            RepositorySystemSession session,
            RequestTrace trace,
            Metadata metadata,
            ArtifactRepository repository,
            Exception exception) {
        RepositoryEvent.Builder event = new RepositoryEvent.Builder(session, EventType.METADATA_INVALID);
        event.setTrace(trace);
        event.setMetadata(metadata);
        event.setException(exception);

    }

    /**
     * Creates a new CurlRequest with the HTTP TRACE method for the specified URL.
     *
     * @param url the URL to send the TRACE request to
     * @return a new CurlRequest object configured with the TRACE method and the specified URL
     */
    public static CurlRequest trace(final String url) {
        return new CurlRequest(Method.TRACE, url);
    }

    /**

        // ## Note: There's no Curl.trace() factory method, but we can use the constructor ##

        // ## Act ##
        final CurlRequest request = new CurlRequest(Method.TRACE, "http://example.com");

        // ## Assert ##
        assertNotNull(request);
        assertEquals(Method.TRACE, request.method());
    }

    @Test
    public void test_MethodEnumValueOf() {

            return this;
        }

        /**
         * Sets the request trace for debugging and diagnostics.
         *
         * @param trace the request trace, may be {@code null}
         * @return this builder, never {@code null}
         */
        public VersionResolverRequestBuilder trace(RequestTrace trace) {
            this.trace = trace;
            return this;
        }

        /**

        return actionClass;
    }

    /**
     * Overrides fillInStackTrace to return null for performance optimization.
     * This prevents stack trace generation for this exception type.
     *
     * @return null to skip stack trace generation
     */
    @Override
    public synchronized Throwable fillInStackTrace() {
        return null;
    }

    return JSONResponse(None, headers={"x-fastapi-item-id": item_id})


@app.patch("/items/{item_id}")
def patch_item(item_id: str, item: Item):
    return {"item_id": item_id, "item": item}


@app.trace("/items/{item_id}")
def trace_item(item_id: str):
    return JSONResponse(None, media_type="message/http")


client = TestClient(app)


def test_get_api_route():
    response = client.get("/items/foo")

            writer.accept("Thread: " + entry.getKey());
            final StackTraceElement[] trace = entry.getValue();
            for (final StackTraceElement element : trace) {
                writer.accept("\tat " + element);
            }
        }
    }