code: protected function applyFix(\SplFileInfo $file, Tokens $tokens)
      {
          for ($index = \count($tokens) - 1; $index > 0; --$index) {
              if ($tokens[$index]->isGivenKind(T_UNSET_CAST)) {
                  $this->fixUnsetCast($tokens, $index);
              }
          }
      }
docs: {@inheritdoc}