func google.golang.org/grpc/metadata.copyOf

5 uses

	google.golang.org/grpc/metadata (current package)
		metadata.go#L193: 		out[key] = copyOf(v)
		metadata.go#L212: 		return copyOf(v)
		metadata.go#L219: 			return copyOf(v)
		metadata.go#L226: func copyOf(v []string) []string {
		metadata.go#L270: 		out[key] = copyOf(v)