signal to be queried was unknown.
SignalQuery.signalId
uint signalId() @propertyGet signalId field.
Returns
The signal id of the signal being queried, or 0 if the
void signalId(uint propval) @propertySet signalId field.
Parameters
propval | The signal id of the signal being queried, or 0 if the signal to be queried was unknown. |