code: protected function applyFix(\SplFileInfo $file, Tokens $tokens)
      {
          foreach ($tokens as $index => $token) {
              if (!$token->isGivenKind(T_DOUBLE_ARROW)) {
                  continue;
              }
  
              $this->fixWhitespace($tokens, $index - 1);
              // do not move anything about if there is a comment following the whitespace
              if (!$tokens[$index + 2]->isComment()) {
                  $this->fixWhitespace($tokens, $index + 1);
              }
          }
      }
docs: {@inheritdoc}