[openrailwaymap] How to tag building for service.

Hey, How tag we "shed" "container" where the technical device are store to handle the signs or crossings Was looking in: https://wiki.openstreetmap.org/wiki/Tag:man_made=street_cabinet https://wiki.openstreetmap.org/wiki/Key:railway two examples nearby, the left is for signaling devices on right for the crossing https://goo.gl/maps/mUTsQpKJohk thx