code: public static function fromArray($array, $saveIndexes = null)
      {
          $tokens = new self(\count($array));
  
          if (null === $saveIndexes || $saveIndexes) {
              foreach ($array as $key => $val) {
                  $tokens[$key] = $val;
              }
          } else {
              $index = 0;
  
              foreach ($array as $val) {
                  $tokens[$index++] = $val;
              }
          }
  
          $tokens->generateCode(); // regenerate code to calculate code hash
  
          return $tokens;
      }
docs: Create token collection from array.
  
  @param Token[] $array       the array to import
  @param bool    $saveIndexes save the numeric indexes used in the original array, default is yes
  
  @return Tokens