<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def get_schedule(self, date=None):
 """ Calling the Schedule API. Return: json data """


        schedule_url = self.api_path + "schedule/"
        params = {}
        if date:
            params['date'] = date
        response = self.get_response(schedule_url, params)
        return response