return NS_ERROR_NOT_IMPLEMENTED;
icalparameter_kind paramkind = icalparameter_string_to_kind(PromiseFlatCString(param).get());  if (paramkind == ICAL_NO_PARAMETER) return NS_ERROR_INVALID_ARG;  const char *icalstr = nsnull; if (paramkind == ICAL_X_PARAMETER) { icalparameter *icalparam = FindXParameter(mProperty, param); if (icalparam) icalstr = icalparameter_get_xvalue(icalparam); } else { icalstr = icalproperty_get_parameter_as_string(mProperty, PromiseFlatCString(param).get()); }  if (!icalstr) { value.Truncate(); value.SetIsVoid(PR_TRUE); } else { value.Assign(icalstr); } return NS_OK;
calIcalProperty::GetParameter(PRInt32 kind, nsACString &value){    return NS_ERROR_NOT_IMPLEMENTED;}