@Override
  public ScriptEnvironment<I> environment() {
    return descriptor;
  }
Attempts to parse and evaluate this script in an environment with no variables.
<p>
If this returns {@link Try.Success} then it means this script will always return the same constant value and we can
avoid evaluating it at runtime.
planetiler-custommap/src/main/java/com/onthegomap/planetiler/custommap/expression/ConfigExpressionScript.java