private void initAccessTokens(String accessToken, String refreshToken, Long expireTime) {
		this.accessToken = accessToken;
		this.expireTime = expireTime;		
		if (refreshToken != null) {
			this.refreshToken = refreshToken;
		}
	}
private void initAccessTokens ( String accessToken , String refreshToken , Long expireTime ) { this . accessToken = accessToken ; this . expireTime = expireTime ; if ( refreshToken != null ) { this . refreshToken = refreshToken ; } }
internal helpers