// Test RequestProcessor with different encodings
        CurlRequest.RequestProcessor processor1 = new CurlRequest.RequestProcessor("UTF-8", 1024);
        CurlRequest.RequestProcessor processor2 = new CurlRequest.RequestProcessor("ISO-8859-1", 2048);
        CurlRequest.RequestProcessor processor3 = new CurlRequest.RequestProcessor("UTF-16", 512);

        assertNotNull(processor1.getResponse());

     */
    public void execute(final Consumer<CurlResponse> actionListener, final Consumer<Exception> exceptionListener) {
        connect(con -> {
            final RequestProcessor processor = new RequestProcessor(encoding, threshold);
            processor.accept(con);
            try (final CurlResponse res = processor.getResponse()) {
                actionListener.accept(res);

1. **Resource Management**: Always use try-with-resources with `CurlResponse`.

2. **Null Safety**: Constructors validate null arguments. Follow this pattern.

3. **Thread Safety**: `RequestProcessor` is single-use per request.

4. **Encoding**: Call `encoding()` before `param()` methods.