text: //
  //  TWRequestToken.h
  //
  //  Created by Yu Sugawara on 4/11/15.
  //  Copyright (c) 2015 Yu Sugawara. All rights reserved.
  //
  
  #import "TWAuthObject.h"
  
  NS_ASSUME_NONNULL_BEGIN
  @interface TWRequestToken : TWAuthObject
  
  + (TWRequestToken * __nullable)tokenWithAmpersandSeparatedRequestTokenString:(NSString *)requestTokenString
                                                                         error:(NSError **)errorPtr;
  
  - (instancetype)initWithRequestToken:(NSString *)requestToken
                         oauthVerifier:(NSString *)oauthVerifier;
  
  - (NSString *)requestToken;
  - (NSString *)oauthVerifier;
  
  - (BOOL)isValid;
  
  @end
  NS_ASSUME_NONNULL_END