public void WriteAmpersandCharEntity()
{
int offset;
byte[] buffer = GetBuffer(5, out offset);
buffer[offset + 0] = (byte)'&';
buffer[offset + 1] = (byte)'a';
buffer[offset + 2] = (byte)'m';
buffer[offset + 3] = (byte)'p';
buffer[offset + 4] = (byte)';';
Advance(5);
}