Added BFTask generics to header of PFUser

Author: richardjrossiii

Parse/PFUser.h

@@ -143,7 +143,7 @@ typedef void(^PFUserLogoutResultBlock)(NSError *PF_NULLABLE_S error);
 
  @returns The task, that encapsulates the work being done.
  */
-- (BFTask *)signUpInBackground;
+- (BFTask PF_GENERIC(NSNumber *)*)signUpInBackground;
 
 /*!
  @abstract Signs up the user *asynchronously*.
@@ -219,8 +219,8 @@ typedef void(^PFUserLogoutResultBlock)(NSError *PF_NULLABLE_S error);
 
  @returns The task, that encapsulates the work being done.
  */
-+ (BFTask *)logInWithUsernameInBackground:(NSString *)username
-                                 password:(NSString *)password;
++ (BFTask PF_GENERIC(__kindof PFUser *)*)logInWithUsernameInBackground:(NSString *)username
+                                                              password:(NSString *)password;
 
 /*!
  @abstract Makes an *asynchronous* request to login a user with specified credentials.
@@ -295,7 +295,7 @@ typedef void(^PFUserLogoutResultBlock)(NSError *PF_NULLABLE_S error);
 
  @returns The task, that encapsulates the work being done.
  */
-+ (BFTask *)becomeInBackground:(NSString *)sessionToken;
++ (BFTask PF_GENERIC(__kindof PFUser *)*)becomeInBackground:(NSString *)sessionToken;
 
 /*!
  @abstract Makes an *asynchronous* request to become a user with the given session token.
@@ -338,7 +338,7 @@ typedef void(^PFUserLogoutResultBlock)(NSError *PF_NULLABLE_S error);
  @returns An instance of `BFTask` that is completed when
  revocable sessions are enabled and currentUser token is migrated.
  */
-+ (BFTask *)enableRevocableSessionInBackground;
++ (BFTask PF_GENERIC(NSNull *)*)enableRevocableSessionInBackground;
 
 /*!
  @abstract Enables revocable sessions and upgrades the currentUser session token to use revocable session if needed.
@@ -369,7 +369,7 @@ typedef void(^PFUserLogoutResultBlock)(NSError *PF_NULLABLE_S error);
 
  @returns An instance of `BFTask`, that is resolved with `nil` result when logging out completes.
  */
-+ (BFTask *)logOutInBackground;
++ (BFTask PF_GENERIC(NSNull *)*)logOutInBackground;
 
 /*!
  @abstract *Asynchronously* logs out the currently logged in user.
@@ -417,7 +417,7 @@ typedef void(^PFUserLogoutResultBlock)(NSError *PF_NULLABLE_S error);
  @param email Email of the account to send a reset password request.
  @returns The task, that encapsulates the work being done.
  */
-+ (BFTask *)requestPasswordResetForEmailInBackground:(NSString *)email;
++ (BFTask PF_GENERIC(NSNumber *)*)requestPasswordResetForEmailInBackground:(NSString *)email;
 
 /*!
  @abstract Send a password reset request *asynchronously* for a specified email.