code: func (r Billing_Order_Cart) WithdrawGdprAcceptance() (err error) {
  	var resp datatypes.Void
  	err = r.Session.DoRequest("SoftLayer_Billing_Order_Cart", "withdrawGdprAcceptance", nil, &r.Options, &resp)
  	return
  }
docs: // Withdraws the users acceptance of the GDPR terms.