code: def add_logo(self, text, width, height, lang=None):
          
  
          logo_entry ={"text": text, "width": width, "height": height}
          if lang:
              logo_entry["lang"] = lang
          self._logos.append(logo_entry)
docs: Binds a logo to the given language
          :type text: str
          :type width: str
          :type height: str
          :type lang: Optional[str]
  
          :param text: Path to logo
          :param width: width of logo
          :param height: height of logo
          :param lang: language