public bool MoveNext()
{
_index++;
if (_index == _count)
{
_index = 0;
_current = default;
return(false);
}
int capacity = _buffer.Length;
int arrayIndex = _offset + _index;
if (arrayIndex >= capacity)
{
arrayIndex -= capacity; // wrap around if needed
}
_current = _buffer.Element <T>(arrayIndex);
return(true);
}