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<?php declare(strict_types=1); trait UiHelperTrait { public function drupalGet(string $url): void { return; } } interface DrupalGetInterface { public function drupalGet(string $url): string; } class DrupalGetInterfaceTest implements DrupalGetInterface { use UiHelperTrait; } $test = new OverrideTraitMethodSignatureInChildClassTest(); var_dump($test->drupalGet('https://drupal.org'));

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