reverted:
--- b/tests/src/Unit/Definition/PatternDefinitionTest.php
+++ a/tests/src/Unit/Definition/PatternDefinitionTest.php
@@ -45,7 +45,7 @@
    * @return array
    *   Data.
    */
+  public function definitionGettersProvider() {
-  public static function definitionGettersProvider() {
     return [
       ['getProvider', 'provider', 'my_module'],
       ['id', 'id', 'pattern_id'],
@@ -176,7 +176,7 @@
    * @return array
    *   Data.
    */
+  public function hasUseProvider(): array {
-  public static function hasUseProvider(): array {
     return [
       'pattern_without_use' => [
         [
@@ -267,7 +267,7 @@
    * @return array
    *   Data.
    */
+  public function definitionGetLinksProvider(): array {
-  public static function definitionGetLinksProvider(): array {
     return [
       [
         [
@@ -332,7 +332,7 @@
    * @return array
    *   Data.
    */
+  public function definitionGetRenderLinksProvider(): array {
-  public static function definitionGetRenderLinksProvider(): array {
     return [
       [
         [
reverted:
--- b/tests/src/Unit/Definition/PatternDefinitionVariantTest.php
+++ a/tests/src/Unit/Definition/PatternDefinitionVariantTest.php
@@ -93,7 +93,7 @@
    * @return array
    *   Data.
    */
+  public function definitionGettersProvider(): array {
-  public static function definitionGettersProvider(): array {
     return [
       ['getName', 'name', 'Variant name'],
       ['getLabel', 'label', 'Variant label'],
reverted:
--- b/tests/src/Unit/Template/TwigExtensionTest.php
+++ a/tests/src/Unit/Template/TwigExtensionTest.php
@@ -49,7 +49,7 @@
    * @return \Iterator
    *   An iterator.
    */
+  public function providerTestTwigAddClass(): \Iterator {
-  public static function providerTestTwigAddClass(): \Iterator {
     yield 'should add a class on element' => [
       ['#type' => 'container'],
       'my-class',
@@ -136,7 +136,7 @@
    * @return \Iterator
    *   An iterator.
    */
+  public function providerTestTwigSetAttribute(): \Iterator {
-  public static function providerTestTwigSetAttribute(): \Iterator {
     yield 'should add attributes on element' => [
       ['#theme' => 'image'],
       'title',