#import @interface UINavigationController (RNNOptions) - (void)setRootBackgroundImage:(UIImage *)backgroundImage; - (void)setNavigationBarTestId:(NSString *)testID; - (void)setNavigationBarVisible:(BOOL)visible animated:(BOOL)animated; - (void)hideBarsOnScroll:(BOOL)hideOnScroll; - (void)setBarStyle:(UIBarStyle)barStyle; - (void)setNavigationBarBlur:(BOOL)blur; - (void)setNavigationBarClipsToBounds:(BOOL)clipsToBounds; - (void)setBackButtonColor:(UIColor *)color; @end