code: private function fixWhitespace(Tokens $tokens, $index)
      {
          $content = $tokens[$index]->getContent();
          // if there is more than one new line in the whitespace, then we need to fix it
          if (substr_count($content, "\n") > 1) {
              // the final bit of the whitespace must be the next statement's indentation
              $tokens[$index] = new Token([T_WHITESPACE, $this->whitespacesConfig->getLineEnding().substr($content, strrpos($content, "\n") + 1)]);
          }
      }
docs: Cleanup a whitespace token.
  
  @param Tokens $tokens
  @param int    $index