Reading Event Hub Archive File in C#

Is there any sample code in C# for reading the Azure Event Hub Archive files (Avro format)?

I am trying to use the Microsoft.Hadoop.Avro library. I dumped the schema out using a java avro tool which produces this:

{

                ""type"":""record"",
                ""name"":""EventData"",
                ""namespace"":""Microsoft.ServiceBus.Messaging"",
                ""fields"":[
                             {""name"":""SequenceNumber"",""type"":""long""},
                             {""name"":""Offset"",""type"":""string""},
                             {""name"":""EnqueuedTimeUtc"",""type"":""string""},
                             {""name"":""SystemProperties"",""type"":{ ""type"":""map"",""values"":[""long"",""double"",""string"",""bytes""]}},
                             {""name"":""Properties"",""type"":{ ""type"":""map"",""values"":[""long"",""double"",""string"",""bytes"", ""null""]}},
                             {""name"":""Body"",""type"":[""null"",""bytes""]}
                         ]
                }

However, when trying to deserialize the file to read the data back in like this:

using (var reader = AvroContainer.CreateReader<EventData>(stream))
            {
                using (var streamReader = new SequentialReader<EventData>(reader))
                {
                    foreach (EventData dta in streamReader.Objects)
                    {
                        //stuff here
                    }

                }
            }

It doesn't work when passing the actual EventData type used on the Producer side so I tried to create a special class marked up with DataContract attributes like this:

[DataContract(Namespace = "Microsoft.ServiceBus.Messaging")]
public class EventData
{
    [DataMember(Name = "SequenceNumber")]
    public long SequenceNumber { get; set; }

    [DataMember(Name = "Offset")]
    public string Offset { get; set; }

    [DataMember(Name = "EnqueuedTimeUtc")]
    public string EnqueuedTimeUtc { get; set; }

    [DataMember(Name = "Body")]
    public ArraySegment<byte> Body { get; set; }

    //[DataMember(Name = "SystemProperties")]
    //public SystemPropertiesCollection SystemProperties { get; set; }

    //[DataMember(Name = "Properties")]
    //public IDictionary<string, object> Properties { get; set; }
}

It errors with the following:

System.Runtime.Serialization.SerializationException occurred
Message=Cannot match the union schema.

Is there a reason no sample code exists from MS for this use case of reading the Avro archive files using C#?