What is this upper cab trim molding thing called?

[90chevywly]

I was wondering if any body knows what this trim molding on the top cab rain channel is called or if there is any replacement clips exist for it because I broke mine.

 

[someotherguy]

Roof panel reveal molding, and the retainer should be part # 15554088

Richard

 

[Jackcat]

https://www.ebay.com/itm/265240733306