Make FutureSubClusterSelectorSwissCross finable
Add ID to FutureSubClusterSelectorSwissCross
so it can be found by the ToolSvc in the same way as FutureSubClusterSelector3x3
and FutureSubClusterSelector2x2
.
Replaces !2503 (closed)
\cc @pagarcia
Edited by Carla Marin Benito