use strict;
use warnings;
use Module;

BEGIN {
my $handle;
sub get_handle {
   # Simplified for clarity.
   # If handle defined, return it.
   # Otherwise create it and return it.
   defined($handle)||
      defined($handle=Module->new())||
      die("Failed to instantiate a Module object\n");
   $handle;
   }
}

get_handle()->method_a('parameter');
get_handle()->method_b('parameter');

exit;