Cleanup solution and add note about why this hack has been introduced

src/Fixer/ConfigurableFixerTrait.php

@@ -0,0 +1,23 @@
+<?php
+declare(strict_types=1);
+
+namespace ErickSkrauch\PhpCsFixer\Fixer;
+
+use PhpCsFixer\AbstractFixer;
+
+// PHP-CS-Fixer 3.59.3 has changed implementation of the AbstractFixer by removing method `configure` from it
+// and introducing a separate trait \PhpCsFixer\Fixer\ConfigurableFixerTrait with this method inside.
+// To mitigate these changes and maintain compatibility with older versions of PHP-CS-Fixer, this solution was created.
+//
+// Commit: https://github.com/PHP-CS-Fixer/PHP-CS-Fixer/commit/064efa1f#diff-e1fb45756cd1d53b6d67072d8a026692c07af55617018229b0bf4ab6c22e3e53L105
+// See https://github.com/erickskrauch/php-cs-fixer-custom-fixers/issues/12
+if (method_exists(AbstractFixer::class, 'configure')) {
+    trait ConfigurableFixerTrait {
+
+    }
+} else {
+    trait ConfigurableFixerTrait {
+        use \PhpCsFixer\Fixer\ConfigurableFixerTrait;
+
+    }
+}

src/Fixer/FunctionNotation/AlignMultilineParametersFixer.php

@@ -4,7 +4,7 @@
 namespace ErickSkrauch\PhpCsFixer\Fixer\FunctionNotation;
 
 use ErickSkrauch\PhpCsFixer\Fixer\AbstractFixer;
-use ErickSkrauch\PhpCsFixer\Legacy\LegacyConfigurableFixerTrait;
+use ErickSkrauch\PhpCsFixer\Fixer\ConfigurableFixerTrait;
 use PhpCsFixer\Fixer\ConfigurableFixerInterface;
 use PhpCsFixer\Fixer\WhitespacesAwareFixerInterface;
 use PhpCsFixer\FixerConfiguration\FixerConfigurationResolver;
@@ -35,8 +35,7 @@
  * }
  */
 final class AlignMultilineParametersFixer extends AbstractFixer implements ConfigurableFixerInterface, WhitespacesAwareFixerInterface {
-
-    use LegacyConfigurableFixerTrait;
+    use ConfigurableFixerTrait;
 
     /**
      * @internal

src/Fixer/Whitespace/BlankLineAroundClassBodyFixer.php

@@ -4,7 +4,7 @@
 namespace ErickSkrauch\PhpCsFixer\Fixer\Whitespace;
 
 use ErickSkrauch\PhpCsFixer\Fixer\AbstractFixer;
-use ErickSkrauch\PhpCsFixer\Legacy\LegacyConfigurableFixerTrait;
+use ErickSkrauch\PhpCsFixer\Fixer\ConfigurableFixerTrait;
 use PhpCsFixer\Fixer\ConfigurableFixerInterface;
 use PhpCsFixer\Fixer\WhitespacesAwareFixerInterface;
 use PhpCsFixer\FixerConfiguration\FixerConfigurationResolver;
@@ -32,8 +32,7 @@
  * } $configuration
  */
 final class BlankLineAroundClassBodyFixer extends AbstractFixer implements ConfigurableFixerInterface, WhitespacesAwareFixerInterface {
-
-    use LegacyConfigurableFixerTrait;
+    use ConfigurableFixerTrait;
 
     /**
      * @internal

src/Fixer/Whitespace/MultilineIfStatementBracesFixer.php

@@ -4,7 +4,7 @@
 namespace ErickSkrauch\PhpCsFixer\Fixer\Whitespace;
 
 use ErickSkrauch\PhpCsFixer\Fixer\AbstractFixer;
-use ErickSkrauch\PhpCsFixer\Legacy\LegacyConfigurableFixerTrait;
+use ErickSkrauch\PhpCsFixer\Fixer\ConfigurableFixerTrait;
 use PhpCsFixer\Fixer\ConfigurableFixerInterface;
 use PhpCsFixer\Fixer\WhitespacesAwareFixerInterface;
 use PhpCsFixer\FixerConfiguration\FixerConfigurationResolver;
@@ -24,8 +24,7 @@
  * } $configuration
  */
 final class MultilineIfStatementBracesFixer extends AbstractFixer implements ConfigurableFixerInterface, WhitespacesAwareFixerInterface {
-
-    use LegacyConfigurableFixerTrait;
+    use ConfigurableFixerTrait;
 
     /**
      * @internal