Add default params in overridden methods to make Sonarcloud happy.

Author: minichma

Ical.Net/CalendarCollection.cs

@@ -55,13 +55,13 @@ private IEnumerable<Occurrence> GetOccurrences(Func<Calendar, IEnumerable<Occurr
         // being ordered to avoid full enumeration.
         .OrderedMergeMany();
 
-    public IEnumerable<Occurrence> GetOccurrences(IDateTime startTime, IDateTime endTime)
+    public IEnumerable<Occurrence> GetOccurrences(IDateTime startTime = null, IDateTime endTime = null)
         => GetOccurrences(iCal => iCal.GetOccurrences(startTime, endTime));
 
     public IEnumerable<Occurrence> GetOccurrences(DateTime? startTime, DateTime? endTime)
         => GetOccurrences(iCal => iCal.GetOccurrences(startTime, endTime));
 
-    public IEnumerable<Occurrence> GetOccurrences<T>(IDateTime startTime, IDateTime endTime) where T : IRecurringComponent
+    public IEnumerable<Occurrence> GetOccurrences<T>(IDateTime startTime = null, IDateTime endTime = null) where T : IRecurringComponent
         => GetOccurrences(iCal => iCal.GetOccurrences<T>(startTime, endTime));
 
     public IEnumerable<Occurrence> GetOccurrences<T>(DateTime? startTime, DateTime? endTime) where T : IRecurringComponent

Ical.Net/CalendarComponents/RecurringComponent.cs

@@ -178,7 +178,7 @@ protected override void OnDeserializing(StreamingContext context)
         Initialize();
     }
 
-    public virtual IEnumerable<Occurrence> GetOccurrences(IDateTime startTime, IDateTime endTime)
+    public virtual IEnumerable<Occurrence> GetOccurrences(IDateTime startTime = null, IDateTime endTime = null)
         => RecurrenceUtil.GetOccurrences(this, startTime, endTime, EvaluationIncludesReferenceDate);
 
     public virtual IEnumerable<Occurrence> GetOccurrences(DateTime? startTime, DateTime? endTime)

Ical.Net/VTimeZoneInfo.cs

@@ -172,7 +172,7 @@ public virtual IDateTime RecurrenceId
         set => Properties.Set("RECURRENCE-ID", value);
     }
 
-    public virtual IEnumerable<Occurrence> GetOccurrences(IDateTime startTime, IDateTime endTime)
+    public virtual IEnumerable<Occurrence> GetOccurrences(IDateTime startTime = null, IDateTime endTime = null)
         => RecurrenceUtil.GetOccurrences(this, startTime, endTime, true);
 
     public virtual IEnumerable<Occurrence> GetOccurrences(DateTime? startTime, DateTime? endTime)