package emonitor;
require Exporter;
# snip for post brevity

use strict;
# more snipping of various other modules being use'd

our @ISA       = qw(Exporter);
our @EXPORT    = qw();
our @EXPORT_OK = qw(
# still more snipping of other methods etc

sub list_hosts {

	my($cfg, $hosts_r, $ow) = @_;
	bless($cfg, 'configthing');  ## <-- this is line 190