my $cur_date = $self->first_billing_date || $self->start_date;
my $end_date = $self->end_date || DateTime->today_local->add(years => 10);
my $start_date = $params{past_dates} ? undef : $self->get_previous_invoice_date;
my $cur_date = $self->first_billing_date || $self->start_date;
my $end_date = $self->end_date || DateTime->today_local->add(years => 10);
my $start_date = $params{past_dates} ? undef : $self->get_previous_invoice_date;
$start_date = max($start_date, $params{start_date}) if $params{start_date};
$end_date = min($end_date, $params{end_date}) if $params{end_date};
$start_date = max($start_date, $params{start_date}) if $params{start_date};
$end_date = min($end_date, $params{end_date}) if $params{end_date};