def chat_deleteScheduledMessage(options = {})
            raise ArgumentError, 'Required arguments :channel missing' if options[:channel].nil?
            raise ArgumentError, 'Required arguments :scheduled_message_id missing' if options[:scheduled_message_id].nil?
            options = options.merge(channel: conversations_id(options)['channel']['id']) if options[:channel]
            post('chat.deleteScheduledMessage', options)