use DX::Utils qw(expand_deps);
use DX::Class;
-has proposition => (is => 'ro');
+has proposition => (is => 'ro', isa => Proposition);
-has geometry_depends_on => (is => 'ro', required => 1);
+has geometry_depends_on => (is => 'ro', required => 1, isa => DependencyList);
-has aperture => (is => 'ro', required => 1);
+has aperture => (is => 'ro', required => 1, isa => ApertureList);
-has members => (is => 'ro', required => 1);
+has members => (
+ is => 'ro', required => 1, isa => ArrayRef[ResolutionStrategy|Resolution]
+);
sub for_deparse {
my ($self) = @_;