code: public static function properties(array $data, $separator = ':')
      {
          $keys = array_keys($data);
          $maxLength = max(array_map('strlen', $keys));
          if (count($data) > 0) {
              foreach ($data as $key => $value) {
                  $key = Str::padRight($key, $maxLength);
                  self::write($key);
                  self::write(' ');
                  if (Str::length($separator) > 0) {
                      self::write($separator . ' ');
                  }
                  self::writeln($value);
              }
          }
      }
docs: Properties.
  
  @param array $data
  @param string $separator Default ':'.