Why is metadataAnnotators not []func(metadata.MD, *http.Request)

[liov]

I don't think

for _, mda := range mux.metadataAnnotators {
		md = metadata.Join(md, mda(ctx, req))
	}

is better than

for _, mda := range mux.metadataAnnotators {
		mda(md, req)
	}

[achew22]

Unfortunately there is no enough information in this issue to determine what you think is wrong nor how we would go about fixing it. In the future, please use the issue template. If you would like to fill in the issue template and reopen I'm also receptive to that.