Mark bundle.Source as
This is feasible now that error-prone understands Path as immutable.
@@ -36,7 +36,7 @@ import javax.annotation.Nullable;
/** An abstract representation of a source file. */
@AutoValue
@GwtIncompatible
-// TODO(sdh): @Immutable once error-prone merges CL 167879820
+@Immutable
public abstract class Source {
/** The path of this source. This may refer to a path on disk or a path on the HTTP server. */
