code: def GetSearchResults(self, zws_id, address, citystatezip, retnzestimate=False):
          
          url = '%s/GetSearchResults.htm' % (self.base_url)
          parameters = {'zws-id': zws_id}
          if address and citystatezip:
              parameters['address'] = address
              parameters['citystatezip'] = citystatezip
          else:
              raise ZillowError({'message': "Specify address and citystatezip."})
          if retnzestimate:
              parameters['retnzestimate'] = 'true'
  
          resp = self._RequestUrl(url, 'GET', data=parameters)
          data = resp.content.decode('utf-8')
  
          xmltodict_data = xmltodict.parse(data)
  
          place = Place()
          try:
              place.set_data(xmltodict_data.get('SearchResults:searchresults', None)['response']['results']['result'])
          except:
              raise ZillowError({'message': "Zillow did not return a valid response: %s" % data})
  
          return place
docs: The GetSearchResults API finds a property for a specified address.
          The content returned contains the address for the property or properties as well as the Zillow Property ID (ZPID) and current Zestimate.
          It also includes the date the Zestimate was computed, a valuation range and the Zestimate ranking for the property within its ZIP code.
          The GetSearchResults API Web Service is located at: http://www.zillow.com/webservice/GetSearchResults.htm
          :param zws_id: The Zillow Web Service Identifier. Each subscriber to Zillow Web Services is uniquely identified by an ID sequence and every request to Web services requires this ID.
          :param address: The address of the property to search. This string should be URL encoded.
          :param citystatezip: The city+state combination and/or ZIP code for which to search. This string should be URL encoded. Note that giving both city and state is required. Using just one will not work.
          :param retnzestimat: Return Rent Zestimate information if available (boolean true/false, default: false)
          :return: