code: private function isOverComplete(Tokens $tokens, $index)
      {
          static $whiteList = ['{', '}', [T_OPEN_TAG], ':', ';'];
  
          return $tokens[$tokens->getPrevMeaningfulToken($index)]->equalsAny($whiteList);
      }
docs: @param Tokens $tokens
  @param int    $index  index of `{` token
  
  @return bool