message = (
            f"Duplicate Operation ID {operation_id} for function "
            + f"{route.endpoint.__name__}"
        )
        file_name = getattr(route.endpoint, "__globals__", {}).get("__file__")
        if file_name:
            message += f" at {file_name}"
        warnings.warn(message, stacklevel=1)
    operation_ids.add(operation_id)
    operation["operationId"] = operation_id
    if route.deprecated:

        })
        @DisplayName("Test getFileName with various file names")
        void testGetFileNameWithVariousValues(String fileName) {
            when(mockFileNotifyInfo.getFileName()).thenReturn(fileName);
            assertEquals(fileName, mockFileNotifyInfo.getFileName());
        }

        @Test
        @DisplayName("Test getFileName with null value")
        void testGetFileNameWithNull() {

        // Calculate offsets (must be 4-byte aligned)
        String fileName1 = "file1.txt";
        String fileName2 = "file2.txt";
        String fileName3 = "file3.txt";

        byte[] fileNameBytes1 = fileName1.getBytes("UTF-16LE");
        byte[] fileNameBytes2 = fileName2.getBytes("UTF-16LE");
        byte[] fileNameBytes3 = fileName3.getBytes("UTF-16LE");

        }
        elementsAll.put(fieldName, newArray);
        elementsText.put(fieldName, newArray);
    }

    protected void addFileParameter(final DiskFileItem item) {
        final String fieldName = item.getFieldName();
        final MultipartFormFile formFile = newActionMultipartFormFile(item);
        elementsAll.put(fieldName, formFile);
        elementsFile.put(fieldName, formFile);
    }

        String fileName = form.designFileName;
        if (StringUtil.isBlank(fileName)) {
            fileName = uploadedFileName;
            try {
                int pos = fileName.indexOf('/');
                if (pos >= 0) {
                    fileName = fileName.substring(pos + 1);
                }
                pos = fileName.indexOf('\\');
                if (pos >= 0) {

 */

package jcifs.smb1.smb1;

/**
 * Filter interface for SMB filename filtering.
 * This interface allows selective filtering of filenames
 * when listing directory contents in SMB shares.
 */
public interface SmbFilenameFilter {
    /**
     * Tests whether the specified filename should be included in a file list.
     *
     * @param dir the directory containing the file

 */

package jcifs.smb;

/**
 * Filter interface for SMB filename filtering.
 *
 * This interface allows selective filtering of filenames
 * when listing directory contents in SMB shares.
 */
public interface SmbFilenameFilter {

    /**
     * Tests whether the specified filename should be included in a file list.
     *
     * @param dir the directory containing the file

            }
        }
        throw new NoSuchFieldException(fieldName);
    }

    private static void setPrivateField(Object target, String fieldName, Object value) throws Exception {
        Class<?> clazz = target.getClass();
        while (clazz != null) {
            try {
                Field f = clazz.getDeclaredField(fieldName);
                f.setAccessible(true);
                f.set(target, value);

            "user": {"username": "johndoe", "full_name": "John Doe"},
        },
    )
    assert response.status_code == 200
    assert response.json() == {
        "item_id": 5,
        "item": {
            "name": "Foo",
            "price": 50.5,
            "description": "Some Foo",
            "tax": 0.1,
        },
        "user": {"username": "johndoe", "full_name": "John Doe"},
    }

- Special character handling
- Input stream validation (not consumption)
- Edge cases (long filenames, paths, whitespace)

**Test Count**: 10 tests

**Key Scenarios**:
- ✅ Valid filename extraction
- ✅ Null parameters handling
- ✅ Empty/missing resource name
- ✅ Special characters in filename (Japanese, paths)
- ✅ Input stream not consumed (only validated)
- ✅ Whitespace and empty string handling

---