11 #import "Invitation.h" 
   12 #import "ISFSObject.h" 
   31     NSInteger _secondsForAnswer;
 
   32     id <ISFSObject> _params;
 
   40 -(id)initWithInviter:(
id <User>)inviter invitee:(
id <User>)invitee secondsForAnswer:(NSInteger)secondsForAnswer params:(
id <ISFSObject>)params;
 
   47 +(id)invitationWithInviter:(
id <User>)inviter invitee:(
id <User>)invitee secondsForAnswer:(NSInteger)secondsForAnswer params:(
id <ISFSObject>)params;
 
   52 +(id)invitationWithInviter:(
id <User>)inviter invitee:(
id <User>)invitee;
 
   56 @property (nonatomic, assign) NSInteger 
id;
 
   60 @property (weak, nonatomic, readonly) id <User> inviter;
 
   64 @property (weak, nonatomic, readonly) id <User> invitee;
 
   68 @property (nonatomic, readonly) NSInteger secondsForAnswer;
 
   73 @property (weak, nonatomic, readonly) id <ISFSObject> params;