Carrot.Extensions.BasicPropertiesExtensions.ContentTypeOrDefault C# (CSharp) Method

        internal static String ContentTypeOrDefault(this IBasicProperties source,
                                                    String @default = "application/json")
        {
            const String key = "Content-Type";

            if (!String.IsNullOrEmpty(source.ContentType))
                return source.ContentType;

            if (source.Headers == null || !source.Headers.ContainsKey(key))
                return @default;

            var bytes = (Byte[])source.Headers[key];

            return bytes.Length > 0 ? source.CreateEncoding().GetString(bytes) : @default;
        }