public void GetMemory()
{
var prefixWriter = new PrefixingBufferWriter <byte>(this.sequence, Prefix.Length, 0);
var mem = prefixWriter.GetMemory(Payload.Length);
Assert.NotEqual(0, mem.Length);
Payload.CopyTo(mem);
prefixWriter.Advance(Payload.Length);
this.PayloadCompleteHelper(prefixWriter);
}
