Update AuthenticationInterface.php

Author: Jakiboy

src/Kernel/AuthenticationInterface.php

@@ -22,6 +22,12 @@ interface AuthenticationInterface
 	 */
 	function getUser(string $username);
 
+	/**
+	 * @param string $username
+	 * @return bool
+	 */
+	function hasSecret(string $username) : bool;
+
 	/**
 	 * @param void
 	 * @return string