/// <summary>
/// Called by <see cref="Connection.ReadVariablesSync"/> in order to get the latest value of specific variables,
/// potentially triggering time consuming downstream read requests.
/// Any exception is considered an error and leads to module restart.
/// </summary>
/// <param name="origin">Information about the originator/initiator of this read request</param>
/// <param name="variables">The variables to read</param>
/// <param name="timeout">Optional timeout</param>
public virtual Task <VTQ[]> ReadVariables(Origin origin, VariableRef[] variables, Duration?timeout)
{
var now = Timestamp.Now;
var vtqs = variables.Select(v => VTQ.Make(DataValue.Empty, now, Quality.Bad)).ToArray();
return(Task.FromResult(vtqs));
}
public VTQ ToVTQ() => VTQ.Make(this);