code: def get_accounts_for_service(cls, service_type):
          
          return [
              a for a in cls.get_accounts().values()
              if a.service_type == service_type
          ]
docs: Get a list of accounts for a given music service.
  
          Args:
              service_type (str): The service_type to use.
  
          Returns:
              list: A list of `Account` instances.