30#import <UIKit/UIKit.h> 
   36+ (NSString *)getPasswordForUsername:(NSString *)username
 
   37                       andServerName:(NSString *)serverName
 
   38                               error:(NSError **)error;
 
   39+ (BOOL)storeUsername:(NSString *)username
 
   40          andPassword:(NSString *)password
 
   41        forServerName:(NSString *)serverName
 
   42       updateExisting:(BOOL)updateExisting
 
   43                error:(NSError **)error;
 
   44+ (BOOL)deleteItemForUsername:(NSString *)username
 
   45                andServerName:(NSString *)serverName
 
   46                        error:(NSError **)error;