+ my $a_num_cust_svc = $a->num_cust_svc;
+ my $b_num_cust_svc = $b->num_cust_svc;
+ return 0 if !$a_num_cust_svc && !$b_num_cust_svc;
+ return -1 if $a_num_cust_svc && !$b_num_cust_svc;
+ return 1 if !$a_num_cust_svc && $b_num_cust_svc;
+ my @a_cust_svc = $a->cust_svc;
+ my @b_cust_svc = $b->cust_svc;
+ $a_cust_svc[0]->svc_x->label cmp $b_cust_svc[0]->svc_x->label;