code: private function addBraces(Tokens $tokens, Token $token, $index, $colonIndex)
      {
          $items = [
              new Token('}'),
              new Token([T_WHITESPACE, ' ']),
              $token,
          ];
          if (!$tokens[$index + 1]->isWhitespace()) {
              $items[] = new Token([T_WHITESPACE, ' ']);
          }
          $tokens->clearAt($index);
          $tokens->insertAt(
              $index,
              $items
          );
  
          // increment the position of the colon by number of items inserted
          $colonIndex += \count($items);
  
          $items = [new Token('{')];
          if (!$tokens[$colonIndex + 1]->isWhitespace()) {
              $items[] = new Token([T_WHITESPACE, ' ']);
          }
  
          $tokens->clearAt($colonIndex);
          $tokens->insertAt(
              $colonIndex,
              $items
          );
      }
docs: Add opening and closing braces to the else: and elseif: .
  
  @param Tokens $tokens     the tokens collection
  @param Token  $token      the current token
  @param int    $index      the current token index
  @param int    $colonIndex the index of the colon