public override void Add(DBusItem child)
{
if (!(child is Interface || child is Node))
{
throw new InvalidOperationException("child must be of type Interface or Node");
}
base.Add(child);
}
public override void Add(DBusItem child)
{
if (!(child is SignalArg || child is Annotation))
{
throw new InvalidOperationException("child must be of type SignalArg or Annotation");
}
base.Add(child);
}
public override void Add(DBusItem child)
{
if (!(child is Signal || child is Method || child is Property || child is Annotation))
{
throw new InvalidOperationException("child must be of type Signal, Method, Property, or Annotation");
}
base.Add(child);
}