*
     * @return the error description
     */
    public String getError() {
        return error != null ? error : "Error code: " + returnCode;
    }

    /**
     * Sets the error message.
     *
     * @param error the error message
     */
    public void setError(String error) {
        this.error = error;
    }

    /**
     * Gets the return code.
     *

    }

    /**
     * Gets the error message.
     *
     * @return the error message
     */
    public String getError() {
        return error;
    }

    /**
     * Sets the error message.
     *
     * @param error the error message
     */
    public void setError(String error) {
        this.error = error;
    }

     *
     * @return the error description
     */
    public String getError() {
        return error != null ? error : "Error code: " + returnCode;
    }

    /**
     * Sets the error message.
     *
     * @param error the error message
     */
    public void setError(String error) {
        this.error = error;
    }

    /**
     * Gets the registration ID.
     *

        this.error = error;
        this.completed = true;
    }

    /**
     * Get error if request failed
     *
     * @return exception if failed, null if successful
     */
    public Exception getError() {
        return error;
    }

    /**
     * Check if request failed
     *
     * @return true if failed, false otherwise
     */
    public boolean hasFailed() {

                    return registration;
                } else {
                    String errorMsg = response != null ? response.getError() : "Response was null";
                    throw new IOException("Witness registration failed: " + errorMsg);
                }

            } catch (Exception e) {

                    
                    return registration;
                } else {
                    throw new IOException("Witness registration failed: " + response.getError());
                }
                
            } catch (Exception e) {
                log.error("Failed to register for witness notifications", e);
                throw new RuntimeException(e);
            }

        // Setup mock RPC response for failure
        WitnessRegisterResponse mockResponse = mock(WitnessRegisterResponse.class);
        when(mockResponse.isSuccess()).thenReturn(false);
        when(mockResponse.getError()).thenReturn("Registration failed");

        WitnessRpcClient mockRpc = mock(WitnessRpcClient.class);
        lenient().when(mockRpc.register(any(WitnessRegisterRequest.class))).thenReturn(mockResponse);

        assertEquals(5, response.getNumberOfInputDocs());
        assertEquals(100, response.getTook());
        assertFalse(response.hasError());
        assertNotNull(response.getErrors());
        assertEquals(0, response.getErrors().size());
    }

    @Test
    public void test_constructorWithErrors() throws Exception {
        List<Throwable> errors = new ArrayList<>();
        errors.add(new Exception("Test error 1"));

        assertNotNull(response);
        assertEquals(100, response.getTook());
        assertFalse(response.hasError());
        assertNotNull(response.getErrors());
        assertEquals(0, response.getErrors().size());
    }

    @Test
    public void test_constructorWithErrors() throws Exception {
        List<Throwable> errors = new ArrayList<>();

    /**
     * Sets an error in the current request with the specified status code and message.
     *
     * @param statusCode The HTTP status code
     * @param message The error message
     */
    public static void setError(final int statusCode, final String message) {
        LaRequestUtil.getOptionalRequest().ifPresent(req -> req.setAttribute(WEB_API_EXCEPTION, new WebApiException(statusCode, message)));
    }

    /**