How know if desktop effects (composition) is enabled?

[Percy Camilo Triveño Aucahuasi]

Hello there, I didn't know where send this post (kwin or plasma), but it
seems that the plasma list is more active.

My question is: Wich are the best way to know if the composition is enabled?
I mean, how my application knows if the desktop effects are enabled?

I was reading about KWin::Extensions::compositeAvailable, but it seems that
this is a internal method ...

Thanks in advanced ; )

Regards,
Percy
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