def get_releases(artist_id, options={})
      api_response = @api_client.make_api_request(:GET, "artist/releases", {:artistId => artist_id}, options)
      @api_client.release_digestor.list_from_xml_doc(api_response.item_xml("releases"))
    end
def get_releases(artist_id, options={})
      api_response = @api_client.make_api_request(:GET, "artist/releases", {:artistId => artist_id}, options)
      @api_client.release_digestor.list_from_xml_doc(api_response.item_xml("releases"))
    end
calls *artist/releases* API method and returns Release array

 @param [Integer] artist_id
 @param [Hash] options optional hash of additional API parameters, e.g. page_size => 50, etc
 @return [[Artist]]