code: public HashMap<String, String> getAccessTokenSet(String verifier) {
  		try {
              mOAuthProvider.retrieveAccessToken(mOAuthConsumer, verifier);
          }
          catch (OAuthException e) {
              e.printStackTrace();
          }
  		
  		return setTokenWithSecret(mOAuthConsumer.getToken(), mOAuthConsumer.getTokenSecret()); 
  	}
docs: Get access token-secret pair
  
  @param	verifier OAuth verifier, which was got after authorization
  @return	Access token-secret pair