class_docstr: Gaode AMap Geocoding API
  ===================
  Gaode Maps Geocoding API is a free open the API, the default quota
  2000 times / day.
  
  Params
  ------
  :param location: Your search location you want geocoded.
  :param key: Gaode API key.
  
  References
  ----------
  API Documentation: http://lbs.amap.com/api/webservice/guide/api/georegeo
  Get AMap Key: http://lbs.amap.com/dev/
code: def _build_headers(self, provider_key, **kwargs):
      return {"Referer": kwargs.get("referer", "")}
  
imports: from __future__ import absolute_import
  import logging
  from geocoder.base import OneResult, MultipleResultsQuery
  from geocoder.keys import gaode_key
label_desc: Use image node_id 2 for calling the GaodeQuery obj's underlying member method code with example usage: obj._build_headers(provider_key) and returns: dict