IronRuby.Builtins.RubyIO.PushBack C# (CSharp) Method

        public void PushBack(byte b) {
            GetStream().PushBack(b);            
        }

 public static void SetPreviousByte(RubyIO/*!*/ self, [DefaultProtocol]int b) {
     self.PushBack(unchecked((byte)b));
 }