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    # AhG::Cmd::input_assets().
    my $hrSourceFiles =
        $args{node_inputs}->find(-name => 'made',
                                    -set => '*', -levels => 'local') // {};
    die 'No input files to goal ' . $args{goal}->name
        unless scalar keys %$hrSourceFiles;

    my $lrSourceFiles = $hrSourceFiles->{(keys %$hrSourceFiles)[0]};
    hlog { 'found inputs to goal', $args{goal}->name, Dumper($lrSourceFiles) } 2;

    # TODO? verify that all the assets are actually in the graph first?
    $self->connect($_, $phony_node) foreach @$lrSourceFiles;

} #visit_goal()

=head2 visit_node

(Optional)
Do whatever the generator wants to do with a L<Data::Hopen::G::Node> that
is not a Goal (see L</visit_goal>).  By default, no-op.  Usage: