static void BufferLifetime(ReadOnlyBuffer <byte> buffer)
{
var array = buffer.ToArray();
using (var pinned = buffer.Retain(pin: true))
{
unsafe
{
var p = (byte *)pinned.PinnedPointer;
Assert.True(null != p);
for (int i = 0; i < buffer.Length; i++)
{
Assert.Equal(array[i], p[i]);
}
}
}
}