private static IDictionary <string, string> GetDerivativesManifestHeaders(string urn, string derivativesUrn) { try { Console.WriteLine("**** Getting DerivativesManifest Headers of: " + derivativesUrn); dynamic response = DerivativesAPI.GetDerivativeManifestHeaders(urn, derivativesUrn); return(response); } catch (Exception) { Console.WriteLine("**** Failed getting DerivativesManifest Headers of: " + derivativesUrn); return(null); } }