added PHP 8 typehints

Author: dg

src/ComponentModel/Component.php

@@ -159,11 +159,10 @@ final public function getParent(): ?IContainer
 	/**
 	 * Sets or removes the parent of this component. This method is managed by containers and should
 	 * not be called by applications
-	 * @return static
 	 * @throws Nette\InvalidStateException
 	 * @internal
 	 */
-	public function setParent(?IContainer $parent, ?string $name = null)
+	public function setParent(?IContainer $parent, ?string $name = null): static
 	{
 		if ($parent === null && $this->parent === null && $name !== null) {
 			$this->name = $name; // just rename

src/ComponentModel/IComponent.php

@@ -30,7 +30,6 @@ function getParent(): ?IContainer;
 
 	/**
 	 * Sets the parent of this component.
-	 * @return static
 	 */
-	function setParent(?IContainer $parent, ?string $name = null);
+	function setParent(?IContainer $parent, ?string $name = null): static;
 }