public static DataChunk GetDataChunk(Stream stream)
{
var dataChunk=new DataChunk();
var rawData=new byte[8];
stream.Read(rawData,0,rawData.Length);
dataChunk.ID=Encoding.ASCII.GetString(rawData.Take(4).ToArray());
dataChunk.Size=BitConverter.ToInt32(rawData.Skip(4).ToArray(),0);
return dataChunk;
}