code: protected function applyFix(\SplFileInfo $file, Tokens $tokens)
      {
          $phpUnitTestCaseIndicator = new PhpUnitTestCaseIndicator();
          foreach ($phpUnitTestCaseIndicator->findPhpUnitClasses($tokens) as $indexes) {
              $this->applyCasing($tokens, $indexes[0], $indexes[1]);
          }
      }
docs: {@inheritdoc}