# File lib/twitter/client/list_members.rb, line 74 def list_add_member(*args) options = args.last.is_a?(Hash) ? args.pop : {} user_to_add, list = args.pop, args.pop user = args.pop || get_screen_name merge_list_into_options!(list, options) merge_owner_into_options!(user, options) merge_user_into_options!(user_to_add, options) response = post("1/lists/members/create", options) format.to_s.downcase == 'xml' ? response['list'] : response end