code: private function getCommentType($content)
      {
          if ('#' === $content[0]) {
              return self::TYPE_HASH;
          }
  
          if ('*' === $content[1]) {
              return self::TYPE_SLASH_ASTERISK;
          }
  
          return self::TYPE_DOUBLE_SLASH;
      }
docs: @param string $content
  
  @return int