How to expose phantomjs default builder so that log location can be modified

PhantomJSDriverService.java

/**
 * Call this if you need to modify the service before building it, such as
 * Builder b = PhantomJsDriverService.createDefaultServiceBuilder(null);
 * b.withLogFile(new File("foo.log"));
 * b.build();
 **/
public static Builder createDefaultServiceBuilder(Capabilities desiredCapabilities){
    	// Look for Proxy configuration within the Capabilities
        Proxy proxy = null;
        if (desiredCapabilities != null) {
            proxy = Proxies.extractProxy(desiredCapabilities);
        }

        // Find PhantomJS executable
        File phantomjsfile = findPhantomJS(desiredCapabilities, PHANTOMJS_DOC_LINK, PHANTOMJS_DOWNLOAD_LINK);

        // Find GhostDriver main JavaScript file
        File ghostDriverfile = findGhostDriver(desiredCapabilities, GHOSTDRIVER_DOC_LINK, GHOSTDRIVER_DOWNLOAD_LINK);

        // Build & return service
        return new Builder().usingPhantomJSExecutable(phantomjsfile)
                .usingGhostDriver(ghostDriverfile)
                .usingAnyFreePort()
                .withProxy(proxy)
                .withLogFile(new File(PHANTOMJS_DEFAULT_LOGFILE))
                .usingCommandLineArguments(
                        findCLIArgumentsFromCaps(desiredCapabilities, PHANTOMJS_CLI_ARGS))
                .usingGhostDriverCommandLineArguments(
                        findCLIArgumentsFromCaps(desiredCapabilities, PHANTOMJS_GHOSTDRIVER_CLI_ARGS));
    }
    
    /**
     * Configures and returns a new {@link PhantomJSDriverService} using the default configuration.
     * <p/>
     * In this configuration, the service will use the PhantomJS executable identified by the the
     * following capability, system property or PATH environment variables:
     * <ul>
     *      <li>{@link PhantomJSDriverService#PHANTOMJS_EXECUTABLE_PATH_PROPERTY}</li>
     *      <li>
     *          {@link PhantomJSDriverService#PHANTOMJS_GHOSTDRIVER_PATH_PROPERTY}
     *          (Optional - without will use GhostDriver internal to PhantomJS)
     *      </li>
     * </ul>
     * <p/>
     * Each service created by this method will be configured to find and use a free port on the current system.
     *
     * @return A new ChromeDriverService using the default configuration.
     */
    public static PhantomJSDriverService createDefaultService(Capabilities desiredCapabilities) {
        return createDefaultServiceBuilder(desiredCapabilities).build();
    }