@Override
  public List<EnvOption> getCompileOptions() {
    return List.of(EnvOption.declarations(
      builtInFunctions.stream().map(BuiltInFunction::signature).toList()
    ));
  }
Creates a {@link Library} of built-in functions that can be made available to dynamic expressions.
planetiler-custommap/src/main/java/com/onthegomap/planetiler/custommap/expression/stdlib/PlanetilerLib.java