Dome pattern ?!

NSE:NIFTY   Nifty 50 Index
In weekly chart of Nifty it looks like it is making the swing highs under a dome pattern. This is a very rare pattern in Indian stocks. If it plays out, Nifty should not make a new high and should reverse from around 11950 - 12050 zone. Downside range is wide open till 10000 at least.