import "fmt"
class foo {
	print "foo1" {
		msg => "inside foo",

		Meta:autogroup => false,
	}
}

class bar($a, $b) { # a parameterized class
	print "bar-"+ $a {
		msg => fmt.printf("inside bar: %s", $b),

		Meta:autogroup => false,
	}
}

include foo
include foo			# duplicate
include bar("b1", "hello")
include bar("b2", "world")
include bar("b2", "world")	# duplicate