Imported Upstream version 5.4.0.167

Former-commit-id: 5624ac747d633e885131e8349322922b6a59baaa

external/api-doc-tools/monodoc/Monodoc/caches/NullCache.cs

@@ -0,0 +1,54 @@
+using System;
+using System.IO;
+
+namespace Monodoc.Caches
+{
+	// This is basically a no-cache implementation
+	public class NullCache : IDocCache
+	{
+		public bool IsCached (string id)
+		{
+			return false;
+		}
+
+		public bool CanCache (DocEntity entity)
+		{
+			return false;
+		}
+
+		public Stream GetCachedStream (string id)
+		{
+			return null;
+		}
+
+		public string GetCachedString (string id)
+		{
+			return null;
+		}
+
+		public void CacheText (string id, string content)
+		{
+
+		}
+
+		public void CacheText (string id, Stream stream)
+		{
+
+		}
+
+		public void CacheBlob (string id, byte[] data)
+		{
+
+		}
+
+		public void CacheBlob (string id, Stream stream)
+		{
+
+		}
+
+		public void Dispose ()
+		{
+			
+		}
+	}
+}