How to get specific achievement state in Google Play Games?

Hi, i've implemented the official Google Play Games plugin for Unity and it works fine.

But now i want to get specific achievement state (is it hidden, revealed, or unlocked). After some browsing, i found out about Achievement and AchievementBuffer, but it is on Native Android (and i doesn't have any experience in writing one).

And when i'm looking at the scripts in GPGS plugins, i saw "Achievement.cs" that include isRevealed properties.

What i want to ask, is there any ways to get Achievement or AchievementBuffer using GPGS plugins for Unity? Or do i have to write native code?

Thank You