Enable NRT for ical.net (top) namespace

Ical.Net/Calendar.cs

@@ -33,7 +33,7 @@
         => CalendarCollection.Load(new StreamReader(s, Encoding.UTF8)).SingleOrDefault();
 
     public static Calendar? Load(TextReader tr)
         => CalendarCollection.Load(tr).SingleOrDefault();
 
     public static IList<T> Load<T>(Stream s, Encoding e)
         => Load<T>(new StreamReader(s, e));
@@ -241,7 +241,7 @@
         // These are the UID/RECURRENCE-ID combinations that replace other occurrences.
         var recurrenceIdsAndUids = this.Children.OfType<IRecurrable>()
             .Where(r => r.RecurrenceId != null)
-            .Select(r => new { ((IUniqueComponent) r).Uid, Dt = r.RecurrenceId!.Value })
+            .Select(r => new { (r as IUniqueComponent).Uid, Dt = r.RecurrenceId!.Value })
             .Where(r => r.Uid != null)
             .ToDictionary(x => x);
 
@@ -294,7 +294,7 @@
             this.AddChild(cal);
             return (T) cal;
         }
-        throw new ArgumentException($"Creating {typeof(T)} failed.");
+        throw new ArgumentException($"Creating {typeof(T).FullName} failed.");
     }
 
     public virtual void MergeWith(IMergeable obj)
@@ -332,7 +332,7 @@
         }
     }
 
     public virtual FreeBusy? GetFreeBusy(FreeBusy freeBusyRequest) => CalendarComponents.FreeBusy.Create(this, freeBusyRequest);
 
     public virtual FreeBusy? GetFreeBusy(CalDateTime fromInclusive, CalDateTime toExclusive)
         => CalendarComponents.FreeBusy.Create(this, CalendarComponents.FreeBusy.CreateRequest(fromInclusive, toExclusive, null, null));

Ical.Net/CalendarCollection.cs

@@ -71,20 +71,20 @@
 
     public FreeBusy? GetFreeBusy(FreeBusy freeBusyRequest)
     {
         return this.Aggregate<Calendar, FreeBusy?>(null, (current, iCal) =>
         {
             var freeBusy = iCal.GetFreeBusy(freeBusyRequest);
-            return current is null ? freeBusy : CombineFreeBusy(current, freeBusy!);
+            return current is null ? freeBusy : CombineFreeBusy(current, freeBusy);
         });
     }
 
     public FreeBusy? GetFreeBusy(Organizer organizer, IEnumerable<Attendee> contacts, CalDateTime fromInclusive, CalDateTime toExclusive)
     {
         return this.Aggregate<Calendar, FreeBusy?>(null, (current, iCal) =>
         {
             var freeBusy = iCal.GetFreeBusy(organizer, contacts, fromInclusive, toExclusive);
-            return current is null ? freeBusy : CombineFreeBusy(current, freeBusy!);
+            return current is null ? freeBusy : CombineFreeBusy(current, freeBusy);
         });
     }
 
     public override int GetHashCode() => CollectionHelpers.GetHashCode(this);