Merge pull request #35059 from nextcloud/backport/35042/stable24

[stable24] Add description for calendar uri

Author: ChristophWurst

lib/public/Calendar/ICalendar.php

@@ -40,6 +40,7 @@ interface ICalendar {
 	public function getKey();
 
 	/**
+	 * In comparison to getKey() this function returns a unique uri within the scope of the principal
 	 * @since 24.0.0
 	 */
 	public function getUri(): string;