@Command("cloudcommand|cc sub1 [argument]")
    public void commandSource(@Argument("argument") final String argument) {
    }
Test for https://github.com/Incendo/cloud/issues/262.
<p>
It is in the annotations module, rather than the core module, in order
to rule out any issues with annotation parsing.
cloud-annotations/src/test/java/org/incendo/cloud/annotations/issue/Issue262.java