def METHOD_NAME(self, service: Service) -> None:
    """Closes a Salesforce Engagement for the given Notify service.
    Args:
        service (Service): Notify Service to close an Engagement for.
    """
    session = self.get_session()
    engagement = salesforce_engagement.get_engagement_by_service_id(session, str(service.id))
    if engagement:
        close_update = {
            "CDS_Close_Reason__c": "Service deleted by user",
            "StageName": salesforce_engagement.ENGAGEMENT_STAGE_CLOSED,
        }
        salesforce_engagement.update(session, service, close_update, None, None)
    self.end_session(session)