Added comment about repeated responses
diff --git a/src/proto/grpc/reflection/v1alpha/reflection.proto b/src/proto/grpc/reflection/v1alpha/reflection.proto
index 32cea75..276ff0e 100644
--- a/src/proto/grpc/reflection/v1alpha/reflection.proto
+++ b/src/proto/grpc/reflection/v1alpha/reflection.proto
@@ -94,6 +94,8 @@
// file_containing_extension requests with transitive dependencies. As
// the repeated label is not allowed in oneof fields, we use a
// FileDescriptorResponse message to encapsulate the repeated fields.
+ // The reflection service is allowed to avoid sending FileDescriptorProtos
+ // that were previously sent in response to earlier requests in the stream.
FileDescriptorResponse file_descriptor_response = 4;
// This message is used to answer all_extension_numbers_of_type requst.