private void SubScribeObserverForProperty <TProperty>(IObserver <TProperty> observer, BindableObject d, BindableProperty propertyToMonitor)
{
if (propertyToMonitor.DeclaringType.GetTypeInfo().IsAssignableFrom(d.GetType().GetTypeInfo()) && observer != null)
{
emitSubscription = d.Observe <TProperty>(propertyToMonitor)
.Subscribe(observer);
}
}
