[
      {
        "name": "building",
        "type": "polygon",
        "tagtransform": "building.lua",
        "tagtransform-node-function": "nodes_proc",
        "tagtransform-way-function": "ways_proc",
        "tagtransform-relation-function": "rels_proc",
        "tagtransform-relation-member-function": "rel_members_proc",
        "tags": [
          {"name": "building", "type": "text"},
          {"name": "shop", "type": "text"},
          {"name": "amenity", "type": "text"}
        ]
      }
    ]