added PHP 8 typehints

src/ComponentModel/Component.php

@@ -158,11 +158,10 @@ 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/Container.php

@@ -32,10 +32,9 @@ class Container extends Component implements IContainer
 
 	/**
 	 * Adds the component to the container.
-	 * @return static
 	 * @throws Nette\InvalidStateException
 	 */
-	public function addComponent(IComponent $component, ?string $name, ?string $insertBefore = null)
+	public function addComponent(IComponent $component, ?string $name, ?string $insertBefore = null): static
 	{
 		if ($name === null) {
 			$name = $component->getName();

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;
 }

src/ComponentModel/IContainer.php

@@ -19,9 +19,8 @@ interface IContainer extends IComponent
 {
 	/**
 	 * Adds the component to the container.
-	 * @return static
 	 */
-	function addComponent(IComponent $component, ?string $name);
+	function addComponent(IComponent $component, ?string $name): static;
 
 	/**
 	 * Removes the component from the container.