Parameter missing in tvActor.SetAlphaTest

[newborn]

For mesh, we have the group index:
tvMesh.SetAlphaTest(alphaTestEnabled, alphaTest, depthBuffer, groupIndex)


But for actor, we dont have the group index:
tvActor.SetAlphaTest(alphaTestEnabled, alphaTest, depthBuffer)


Would it be possible to add the groupIndex in the actor as well?