Someone

[root@localhost modules]$ find foo bar -type f | xargs head
==> foo/manifests/bar.pp <==
class foo::bar {
        include bar

        info("foo::bar")
}

==> bar/manifests/init.pp <==
class bar {
        info("bar")
}
[root@localhost modules]$    
[root@localhost modules]$ puppet apply --modulepath=$PWD -e 'include foo::bar' | grep alert:
alert: Scope(Class[Foo::Bar]): foo::bar
[root@localhost modules]$