Upgrade to 3.5.5

kirby/src/Cms/Content.php

@@ -198,7 +198,7 @@ class Content
      * passed key(s)
      *
      * @param string ...$keys
-     * @return self
+     * @return static
      */
     public function not(...$keys)
     {
@@ -227,7 +227,7 @@ class Content
      * Set the parent model
      *
      * @param \Kirby\Cms\Model $parent
-     * @return self
+     * @return $this
      */
     public function setParent(Model $parent)
     {
@@ -252,7 +252,7 @@ class Content
      *
      * @param array|null $content
      * @param bool $overwrite
-     * @return self
+     * @return $this
      */
     public function update(array $content = null, bool $overwrite = false)
     {