+import org.springframework.security.userdetails.UserDetailsManager;
+
+public interface UserAdminService extends UserDetailsManager {
+ /**
+ * Usernames must match this regexp pattern ({@value #USERNAME_PATTERN}).
+ * Thanks to <a href=
+ * "http://www.mkyong.com/regular-expressions/how-to-validate-username-with-regular-expression/"
+ * >this tip</a> (modified to remove '-' and add upper-case)