text: #import <UIKit/UIKit.h>
  
  @interface FWNavigationBar : UINavigationBar
  - (instancetype)init;
  - (void)setTitles:(NSString*)title subtitle:(NSString*)subtitle;
  
  @property (nonatomic, strong) UILabel *navBarTitle;
  @property (nonatomic, strong) UILabel *navBarSubtitle;
  @property (nonatomic, strong) UINavigationItem *navItem;
  @end
  