code: def air_quality_lat_lng(self, lat, lng):
      url = f"{self.base_endpoint}/geo:{lat};{lng}/"
      return self.make_request(url)
  
imports: import requests
label_desc: Use image node_id 4 for calling the AQIClient obj's underlying member method code with example usage: obj.air_quality_lat_lng(lat, lng) and returns: self