/// <summary>New deletions always result in a cache miss, specify the <paramref name="deletesMode"/></summary>
 /// <param name="filter">Filter to cache results of</param>
 /// <param name="deletesMode">See <see cref="CachingWrapperFilter.DeletesMode" /></param>
 public CachingSpanFilter(SpanFilter filter, CachingWrapperFilter.DeletesMode deletesMode)
 {
     this.filter = filter;
     if (deletesMode == CachingWrapperFilter.DeletesMode.DYNAMIC)
     {
         throw new System.ArgumentException("DeletesMode.DYNAMIC is not supported");
     }
     this.cache = new AnonymousFilterCache(deletesMode);
 }
 public AnonymousFilterCache(CachingWrapperFilter.DeletesMode deletesMode) : base(deletesMode)
 {
 }