func (e BatchJobKeyRotateEncryption) Validate() error {
	if e.Type != sses3 && e.Type != ssekms {
		return errInvalidArgument
	}
	spaces := strings.HasPrefix(e.Key, " ") || strings.HasSuffix(e.Key, " ")
	if e.Type == ssekms && spaces {
		return crypto.ErrInvalidEncryptionKeyID
	}

	if e.Type == ssekms && GlobalKMS != nil {
		ctx := kms.Context{}
		if e.Context != "" {

		// needed.
		// String might contain trimming spaces, which
		// needs to be trimmed.
		res, ok := strToInt(strings.TrimSpace(x))
		if !ok {
			return 0, errCastFailure("could not parse as int")
		}
		return res, nil
	case []byte:
		// Parse as number, truncate floating point if
		// needed.
		// String might contain trimming spaces, which
		// needs to be trimmed.

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 (Apache 2.0)

### Testing

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

- `DefaultContentsParserTest` - Text processing pipeline

---

## Code Conventions

### Java Style

- **Formatter**: Eclipse formatter at `src/config/eclipse/formatter/java.xml`
- **Indentation**: 4 spaces (no tabs)
- **Line Length**: 140 characters max
- **License Headers**: Required (use `mvn license:format`)

### Naming & Style

    @Test
    public void test_UrlWithSpaces() {
        // ## Arrange ##
        // URLs with spaces should be accepted (HttpURLConnection is lenient)
        final CurlRequest request = new CurlRequest(Method.GET, "http://example.com/path with spaces");

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

    @Test

        value = "key.with.dots=value\nkey_with_underscores=value with spaces\nkey-with-dashes=value@#$%";
        paramMap = ParameterUtil.parse(value);
        assertEquals(3, paramMap.size());
        assertEquals("value", paramMap.get("key.with.dots"));
        assertEquals("value with spaces", paramMap.get("key_with_underscores"));
        assertEquals("value@#$%", paramMap.get("key-with-dashes"));
    }

        assertTrue("Should contain Arabic", item.getText().contains("العربية"));
    }

    @Test
    public void test_textWithWhitespace() {
        String[] text = { "  spaces  " };
        String[][] readings = { { "spaces" } };

        SuggestItem item = new SuggestItem(text, readings, null, 0L, 0L, 1.0f, null, null, null, SuggestItem.Kind.QUERY);

        // Text is trimmed or kept as-is depending on implementation

        // Test forward slashes
        assertDoesNotThrow(() -> new Trans2GetDfsReferral(mockConfig, "//server/share"));

        // Test with spaces
        assertDoesNotThrow(() -> new Trans2GetDfsReferral(mockConfig, "\\\\server\\my share\\file.txt"));

        // Test with special characters

                .withParameter("something-else", "crazy with spaces")
                .withParameter("and-another-thing", "")
                .withParameter("normal-thing", "foo")
                .toString())
        .isEqualTo(
            "text/plain; something=\"cr@zy\"; something-else=\"crazy with spaces\";"
                + " and-another-thing=\"\"; normal-thing=foo");
  }

        assertEquals(0x0101, actualInfoLevel);
    }

    @Test
    void testWriteParametersWithSpecialCharacters() {
        String specialPath = "test/file with spaces and $pecial #chars!.txt";
        trans2QueryPathInfo = new Trans2QueryPathInformation(config, specialPath, TEST_INFO_LEVEL);

        byte[] buffer = new byte[512];