public void setFilePath(String filePath) {
        this.filePath = filePath;
    }
Set the file path to store the screenshot.
Include the separator at the end of the path.
Use an empty string to use the application folder. Use NULL to use the system
default storage folder.
@param filePath File path to use to store the screenshot. Include the separator at the end of the path.
jme3-screenshot-tests/src/main/java/org/jmonkeyengine/screenshottests/testframework/ScreenshotNoInputAppState.java