public static IEnumerable <Tuple <string, string> > GetHeaders(this Bundle.BundleEntryResponseComponent interaction) { foreach (var headerExt in interaction.GetExtensions(EXTENSION_RESPONSE_HEADER)) { if (headerExt.Value != null && headerExt.Value is FhirString) { var header = ((FhirString)headerExt.Value).Value; if (header != null) { yield return(header.SplitLeft(':')); } } } }