package Bar;
  use Smart::Comments;
  sub blather {
    ### $foo
  }

##</code><code>##

  package Foo;
  use LWP::UserAgent;

  sub make_agent { LWP::UserAgent->new }

##</code><code>##

  package Foo;
  # NOTE: this module needs LWP::UserAgent loaded in order to work
  sub make_agent { LWP::UserAgent->new }

##</code><code>##

use runtime LWP::UserAgent;