private EwsValueItem EnsureValueItem(string altId, string name = null, string description = null, EwsValueTypeEnum type = EwsValueTypeEnum.String, EwsContainerItem parent = null, string unit = null, EwsValueWriteableEnum writeable = EwsValueWriteableEnum.Writeable, EwsValueForceableEnum forceable = EwsValueForceableEnum.Forceable, EwsValueStateEnum defaultState = EwsValueStateEnum.Uncertain)
{
CheckCancellationToken();
var vi = DataAdapter.ValueItems.FirstOrDefault(x => x.AlternateId == altId);
if (vi == null)
{
return(DataAdapter.AddValueItem(altId, name ?? altId, description, type, writeable, forceable, defaultState, unit, parent));
}
vi = DataAdapter.ModifyValueItemName(vi, altId);
vi = DataAdapter.ModifyValueItemDescription(vi, description);
vi = DataAdapter.ModifyValueItemType(vi, type);
vi = DataAdapter.ModifyValueItemWriteable(vi, writeable);
vi = DataAdapter.ModifyValueItemForceable(vi, forceable);
vi = DataAdapter.ModifyValueItemUnit(vi, unit);
return(DataAdapter.ModifyValueItemParent(vi, parent));
}