code: func (m *Manager) DisablePublicServiceAccess(serviceInfo *ServiceInfo) error {
  	for _, servicePlan := range serviceInfo.AllPlans() {
  		for _, plan := range servicePlan {
  			if plan.Public {
  				err := m.Client.MakeServicePlanPrivate(plan.GUID)
  				if err != nil {
  					return err
  				}
  			}
  		}
  	}
  	return nil
  }
docs: //DisablePublicServiceAccess - will ensure any public plan is made private