code: func (r Billing_Item_Cancellation_Request) Void(closeRelatedTicketFlag *bool) (resp bool, err error) {
  	params := []interface{}{
  		closeRelatedTicketFlag,
  	}
  	err = r.Session.DoRequest("SoftLayer_Billing_Item_Cancellation_Request", "void", params, &r.Options, &resp)
  	return
  }
docs: // This method voids a service cancellation request in "Pending" or "Approved" status.