添加备注

user-service/src/main/java/com/diagbot/facade/UserFacade.java

@@ -35,6 +35,7 @@ import org.springframework.security.crypto.password.PasswordEncoder;
 import org.springframework.stereotype.Component;
 
 import java.io.Serializable;
+import java.util.ArrayList;
 import java.util.Date;
 import java.util.HashMap;
 import java.util.List;