docs: def create_global_notification(self, account_id, account_notification_end_at, account_notification_subject, account_notification_message, account_notification_start_at, account_notification_icon=None, account_notification_roles=None):
          """
          Create a global notification.
  
          Create and return a new global notification for an account.
          """
          path = {}
          data = {}
          params = {}
  
          # REQUIRED - PATH - account_id
          """ID"""
          path["account_id"] = account_id
  
          # REQUIRED - account_notification[subject]
          """The subject of the notification."""
          data["account_notification[subject]"] = account_notification_subject
  
          # REQUIRED - account_notification[message]
          """The message body of the notification."""
          data["account_notification[message]"] = account_notification_message
  
          # REQUIRED - account_notification[start_at]
          """The start date and time of the notification in ISO8601 format.
          e.g. 2014-01-01T01:00Z"""
          data["account_notification[start_at]"] = account_notification_start_at
  
          # REQUIRED - account_notification[end_at]
          """The end date and time of the notification in ISO8601 format.
          e.g. 2014-01-01T01:00Z"""
          data["account_notification[end_at]"] = account_notification_end_at
  
          # OPTIONAL - account_notification[icon]
          """The icon to display with the notification.
          Note: Defaults to warning."""
          if account_notification_icon is not None:
              self._validate_enum(account_notification_icon, ["warning", "information", "question", "error", "calendar"])
              data["account_notification[icon]"] = account_notification_icon
  
          # OPTIONAL - account_notification_roles
          """The role(s) to send global notification to.  Note:  ommitting this field will send to everyone
          Example:
            account_notification_roles: ["StudentEnrollment", "TeacherEnrollment"]"""
          if account_notification_roles is not None:
              data["account_notification_roles"] = account_notification_roles
  
          self.logger.debug("POST /api/v1/accounts/{account_id}/account_notifications with query params: {params} and form data: {data}".format(params=params, data=data, **path))
          return self.generic_request("POST", "/api/v1/accounts/{account_id}/account_notifications".format(**path), data=data, params=params, no_data=True)