I believe they meant the Reflection extension submitted by a community member.
As far as I know, the answer is no.
For the OP: In general I recommend using the reflection layer effect instead. Since it applies to the same layer, it doesn’t matter how many times an object is added to the layer. You can disable the “wave” effect too, if you want.
Here’s the layer effect reflecting all of the coins (3 of the same object) with no waves.
