Add some @return static

Signed-off-by: Jack Cherng <[email protected]>

Author: jfcherng

src/Renderer/AbstractRenderer.php

@@ -77,6 +77,8 @@ public function __construct(array $options = [])
      * options.
      *
      * @param array $options the options
+     *
+     * @return static
      */
     public function setOptions(array $options): self
     {
@@ -150,6 +152,8 @@ abstract protected function renderWoker(Differ $differ): string;
      *
      * @param string|string[] $old the old language
      * @param string|string[] $new the new language
+     *
+     * @return static
      */
     protected function updateLanguage($old, $new): self
     {

src/Renderer/Html/AbstractHtml.php

@@ -135,6 +135,8 @@ public function getChanges(Differ $differ): array
      * @param string               $new          the new line
      *
      * @throws \InvalidArgumentException
+     *
+     * @return static
      */
     protected function renderChangedExtent(AbstractLineRenderer $lineRenderer, string &$old, string &$new): self
     {

src/Renderer/Html/LineRenderer/AbstractLineRenderer.php

@@ -45,6 +45,8 @@ public function __construct(array $differOptions, array $rendererOptions)
      * Set the differ options.
      *
      * @param array $differOptions the differ options
+     *
+     * @return static
      */
     public function setDifferOptions(array $differOptions): self
     {
@@ -58,6 +60,8 @@ public function setDifferOptions(array $differOptions): self
      * Set the renderer options.
      *
      * @param array $rendererOptions the renderer options
+     *
+     * @return static
      */
     public function setRendererOptions(array $rendererOptions): self
     {

src/Renderer/Html/LineRenderer/LineRendererInterface.php

@@ -13,6 +13,8 @@ interface LineRendererInterface
      *
      * @param MbString $mbOld the old megabytes line
      * @param MbString $mbNew the new megabytes line
+     *
+     * @return static
      */
     public function render(MbString $mbOld, MbString $mbNew): self;
 }