diff --git a/lib/public/Authentication/LoginCredentials/ICredentials.php b/lib/public/Authentication/LoginCredentials/ICredentials.php
index 97c88dda5de53..46c6f26701faf 100644
--- a/lib/public/Authentication/LoginCredentials/ICredentials.php
+++ b/lib/public/Authentication/LoginCredentials/ICredentials.php
@@ -30,16 +30,28 @@
 interface ICredentials {
 
 	/**
+	 * Get the user UID
+	 *
+	 * @since 9.2
+	 *
 	 * @return string
 	 */
 	public function getUID();
 
 	/**
+	 * Get the login name the users used to login
+	 *
+	 * @since 9.2
+	 *
 	 * @return string
 	 */
 	public function getLoginName();
 
 	/**
+	 * Get the password
+	 *
+	 * @since 9.2
+	 *
 	 * @return string
 	 */
 	public function getPassword();
diff --git a/lib/public/Authentication/LoginCredentials/IStore.php b/lib/public/Authentication/LoginCredentials/IStore.php
index a35e9214e7e58..549f0e7759b81 100644
--- a/lib/public/Authentication/LoginCredentials/IStore.php
+++ b/lib/public/Authentication/LoginCredentials/IStore.php
@@ -32,6 +32,8 @@
 interface IStore {
 	
 	/**
+	 * Get login credentials of the currently logged in user
+	 *
 	 * @since 9.2
 	 *
 	 * @throws CredentialsUnavailableException