return buf.toString();
    }

    /**
     * Returns true if the string consists only of numeric characters.
     *
     * @param s
     *            the string to check
     * @return <code>true</code> if the string consists only of numeric characters
     */
    public static boolean isNumber(final String s) {
        if (isEmpty(s)) {
            return false;
        }

// newline-terminated numeric fields. The first field is the number of entries
// and is always present. Following this are the entries, consisting of two
// fields (offset, length). This function must stop reading at the end
// boundary of the block containing the last newline.
//
// Note that the GNU manual says that numeric values should be encoded in octal

            assertFalse(opt.isPresent());
        }
    }

    public void test_ofNullable_edgeCaseValues() {
        // Test with special numeric values
        OptionalEntity<Double> nanOpt = OptionalUtil.ofNullable(Double.NaN);
        assertTrue(nanOpt.isPresent());
        assertTrue(Double.isNaN(nanOpt.get()));

    - tutorial/index.md
    - tutorial/first-steps.md
    - tutorial/path-params.md
    - tutorial/query-params.md
    - tutorial/body.md
    - tutorial/query-params-str-validations.md
    - tutorial/path-params-numeric-validations.md
    - tutorial/query-param-models.md
    - tutorial/body-multiple-params.md
    - tutorial/body-fields.md
    - tutorial/body-nested-models.md
    - tutorial/schema-extra-example.md

		{"", []string{}, false},
		// Range cannot be negative.
		{":9000", []string{"/export1{-1...1}"}, false},
		// Range cannot start bigger than end.
		{":9000", []string{"/export1{64...1}"}, false},
		// Range can only be numeric.
		{":9000", []string{"/export1{a...z}"}, false},
		// Duplicate disks not allowed.
		{":9000", []string{"/export1{1...32}", "/export1{1...32}"}, false},

            fail("Should throw NumberFormatException");
        } catch (NumberFormatException e) {
            // Expected exception
            assertNotNull(e);
        }
    }

    // Test various numeric values for time adjust
    public void xtest_getTimeAdjustTimeMillisAsLong_variousValues() {
        // Test negative value
        FessEnv.SimpleImpl negativeEnv = new FessEnv.SimpleImpl() {

        // Test with String data
        Map<String, Object> stringData = new HashMap<>();
        stringData.put("text", "test value");
        callback.store(params, stringData);

        // Test with numeric data
        Map<String, Object> numericData = new HashMap<>();
        numericData.put("integer", 123);
        numericData.put("long", 456L);
        numericData.put("double", 789.0);

        // Act
        String actual = e.getName();
        // Assert
        assertEquals(name, actual);
    }

    // Parameterized tests for numeric getters with edge values
    static Stream<Arguments> intGetterProvider() {
        return Stream.of(Arguments.of((IntGetter) FileEntry::getType, -1, "negative type"),

        paramMap.put("level1", level1);

        Object result = scriptEngine.evaluate(template, paramMap);
        assertEquals("nested", result);
    }

    // Test evaluate method with numeric values
    public void test_evaluate_withNumericValues() {
        String template = "Result: ${number1} + ${number2} = ${sum}";
        Map<String, Object> paramMap = new HashMap<>();
        paramMap.put("number1", 10);

        assertEquals(Trans2FindFirst2.SMB_FILE_BOTH_DIRECTORY_INFO, informationLevel);
    }

    @Test
    void testZeroValues() {
        // Test with zero values for numeric parameters
        trans2FindNext2 = new Trans2FindNext2(config, 0, 0, "", 0, 0);

        assertNotNull(trans2FindNext2);

        byte[] buffer = new byte[256];