@Override
  public com.google.api.expr.v1alpha1.Type findType(String typeName) {
    return typeName.equals(GeometryVal.NAME) ? GeometryVal.PROTO_TYPE : null;
  }
Registers any types that are available to CEL expressions in planetiler configs.
planetiler-custommap/src/main/java/com/onthegomap/planetiler/custommap/expression/stdlib/PlanetilerTypeRegistry.java