public void ReadWriteFixedString128()
{
var dataStream = new DataStreamWriter(300 * 4, Allocator.Temp);
var src = new FixedString128("This is a string");
dataStream.WriteFixedString128(src);
//Assert.AreEqual(src.LengthInBytes+2, dataStream.Length);
var reader = new DataStreamReader(dataStream.AsNativeArray());
var dst = reader.ReadFixedString128();
Assert.AreEqual(src, dst);
}