code: private function fixTokensComparePart(Tokens $tokens, $start, $end)
      {
          $newTokens = $tokens->generatePartialCode($start, $end);
          $newTokens = $this->fixTokens(Tokens::fromCode(sprintf('<?php %s;', $newTokens)));
          $newTokens->clearAt(\count($newTokens) - 1);
          $newTokens->clearAt(0);
          $newTokens->clearEmptyTokens();
  
          return $newTokens;
      }
docs: @param Tokens $tokens
  @param int    $start
  @param int    $end
  
  @return Tokens