@Override
  public String toString() {
    return "ScriptContextDescription{" +
      "declarations=" + declarations.stream().map(Decl::getName).toList() +
      ", clazz=" + clazz +
      '}';
  }
Returns true if this contains a variable declaration for {@code variable}.
planetiler-custommap/src/main/java/com/onthegomap/planetiler/custommap/expression/ScriptEnvironment.java