Solved 1.9 Sounds?

I am very confused on what 1.9 did to sounds.
I have the normal playsound:

Code:

Player#playerSound(Player#getLocation(), Sound.CHEST_OPEN, 1, 1);

However CHEST_OPEN is turning red saying it is not a field. I tried finding another post like this about sound changes in 1.9 but I can not seem to find them. What is going on here and what has changed with sounds?

 

Thank you for your fast response, but these enums are not seeming to work either with Sound. When I do Sound. in eclipse it shows the original 1.8 sounds still, however I am using this version of 1.9.

When I try BLOCK_CHEST_OPEN it does not seem to work either, giving the same error.

EDIT: Hmmm, I don't know what I did but I just removed and re-installed the reference library of that jar version, well now those new enums are showing un-like before. Thanks for your help I guess.