def get_series_actors(seriesid)
      request_url = "#{@apikey}/series/#{seriesid}/actors.xml"
      request_url = URI.join(BASE_URL, 'api/', request_url)
      response = self.class.get(request_url).parsed_response
      return nil unless response["Actors"]
      return nil unless response["Actors"]["Actor"]
      case response["Actors"]["Actor"]
        when Array
          response["Actors"]["Actor"].map {|s|Actor.new(self, s)}
        when Hash
          [Actor.new(self, response["Actors"]["Actor"])]
        else
          []
      end
    end
def get_series_actors(seriesid)
      request_url = "#{@apikey}/series/#{seriesid}/actors.xml"
      request_url = URI.join(BASE_URL, 'api/', request_url)
      response = self.class.get(request_url).parsed_response
      return nil unless response["Actors"]
      return nil unless response["Actors"]["Actor"]
      case response["Actors"]["Actor"]
        when Array
          response["Actors"]["Actor"].map {|s|Actor.new(self, s)}
        when Hash
          [Actor.new(self, response["Actors"]["Actor"])]
        else
          []
      end
    end
Retrieves the actors for a given series by its series id.
 Parameters::
   +seriesid+::  The TheTvDb assigned unique identifier for the series to access.
 Returns::   An array of TheTvDbParty::Actor instances or +nil+ if the actors could not be retrieved. Note: may return [] if actors are retrieved but there are none.