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

        public virtual void NonBlockingOperation(Action operation, bool isRead) {
            throw RubyExceptions.CreateEBADF();
        }

 public static int WriteNoBlock(RubyIO/*!*/ self, [NotNull]MutableString/*!*/ val) {
     var stream = self.GetWritableStream();
     int result = -1;
     self.NonBlockingOperation(() => result = Write(self, val), false);
     return result;
 }