public static <I extends ScriptContext> ConfigExpressionScript<I, Object> parse(String string,
    ScriptEnvironment<I> description) {
    return parse(string, description, Object.class);
  }
Returns an expression parsed from a user-supplied script string.

@throws ParseException if the script failes to compile or type-check
planetiler-custommap/src/main/java/com/onthegomap/planetiler/custommap/expression/ConfigExpressionScript.java