code: def thesauri(self, token: dict = None, prot: str = "https") -> dict:
          
          # passing auth parameter
          thez_url = "{}://v1.{}.isogeo.com/thesauri".format(prot, self.api_url)
          thez_req = self.get(
              thez_url, headers=self.header, proxies=self.proxies, verify=self.ssl
          )
  
          # checking response
          checker.check_api_response(thez_req)
  
          # end of method
          return thez_req.json()
docs: Get list of available thesauri.
  
          :param str token: API auth token
          :param str prot: https [DEFAULT] or http
           (use it only for dev and tracking needs).