How do I add Sikuli JAR file to OpenTest allowing for automation on Windows 7?

The code below is in yaml and is designed to allow for support in executing Java using an external java library.

Currently, I receive an error indicating that the Class could not be found.

Caused by: java.lang.RuntimeException: java.lang.ClassNotFoundException: org.sikuli.script.*

I have added the jar file to the folder name user-jars as suggested here: https://stackoverflow.com/a/54560878/168617 and here: https://getopentest.org/docs/scripting-support.html#advanced-concepts

# https://stackoverflow.com/a/54560878/168617
# https://getopentest.org/docs/scripting-support.html#advanced-concepts
description: Login using SikuliX as driver
actors:
  - actor: WEB
    segments:
      - segment: 1
        actions:
          - description: Get content of file
          - script: |
              var Sikuli = Java.type("org.sikuli.script.*")
              var Files = Java.type("java.nio.file.Files");
              var Paths = Java.type("java.nio.file.Paths");
              var System = Java.type("java.lang.System");
              var JavaString = Java.type("java.lang.String");

              var content = new JavaString(Files.readAllBytes(Paths.get("C:/content.txt")), "UTF-8");
              System.out.println(content);

The Java.type() API requires that you specify the name of a single Java class, so you cannot use wildcards. For example:

var Screen = Java.type("org.sikuli.script.Screen");
var screen = new Screen();
screen.click("C:/images/test.png", 0);