private static void igniteFirstService() {
        Service http = ignite(); // I give the variable the name 'http' for the code to make sense when adding routes.
        http.get("/hello", (q, a) -> "Hello World!");
    }
This example shows how to correctly use the Spark instance API which allows for multiple services.
The factory method 'service()' should be statically imported from the Spark class.
src/test/java/spark/examples/multiple/MultipleServices.java