I think you're getting confused about OO patterns. You must ask yourself: will TestClass be a ConfClass or it will have a ConfClass? After you answered that question, you will be able to implement it. If TestClass will BE a ConfClass:

package TestClass;
use base qw(ConfClass);

sub new {
    my $class = shift;
    my $self = $class->SUPER::new(); # Initialize the superclass ConfC
+lass here.
    ... # Do whatever you want.
    return $self;
}
[download]

If TestClass HAS a ConfClass object, then it should be someway like this:

package TestClass;
use ConfClass;

sub new {
    my $self = {};
    bless $self;
    $self->conf(ConfClass->new());
}

sub conf {
    my ($self, $conf) = @_;
    $self->{'_CONF'} = $conf if $conf;
    return $self->{'_CONF'};
}
[download]

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