public void WhenPushingMultipleBracesCountIsIncreased()
 {
     var stack = new UnifiedBraceStacker();
       stack.Push(new CharPos('{', 0));
       stack.Push(new CharPos('(', 0));
       Assert.Equal(2, stack.Count('{'));
 }
 public void WhenEmptyCountIsZero()
 {
     var stack = new UnifiedBraceStacker();
       Assert.Equal(0, stack.Count('{'));
 }