code: def installation(self):
          
          self.locations = []
  
          url = ("https://tccna.honeywell.com/WebAPI/emea/api/v1/location"
                 "/installationInfo?userId=%s"
                 "&includeTemperatureControlSystems=True"
                 % self.account_info['userId'])
  
          response = requests.get(url, headers=self._headers())
          response.raise_for_status()
  
          self.installation_info = response.json()
          self.system_id = (self.installation_info[0]['gateways'][0]
                            ['temperatureControlSystems'][0]['systemId'])
  
          for loc_data in self.installation_info:
              self.locations.append(Location(self, loc_data))
  
          return self.installation_info
docs: Return the details of the installation.