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-rw-r--r--csharp/src/Google.Protobuf/MessageParser.cs4
1 files changed, 3 insertions, 1 deletions
diff --git a/csharp/src/Google.Protobuf/MessageParser.cs b/csharp/src/Google.Protobuf/MessageParser.cs
index f911c9dd..81be3c2a 100644
--- a/csharp/src/Google.Protobuf/MessageParser.cs
+++ b/csharp/src/Google.Protobuf/MessageParser.cs
@@ -157,7 +157,9 @@ namespace Google.Protobuf
public sealed class MessageParser<T> : MessageParser where T : IMessage<T>
{
// Implementation note: all the methods here *could* just delegate up to the base class and cast the result.
- // The
+ // The current implementation avoids a virtual method call and a cast, which *may* be significant in some cases.
+ // Benchmarking work is required to measure the significance - but it's only a few lines of code in any case.
+ // The API wouldn't change anyway - just the implementation - so this work can be deferred.
private readonly Func<T> factory;
/// <summary>