my @char_list = get_separator(
                                    path    => $csv_path,
                                    exclude => $array1_ref, # optional
                                    include => $array2_ref, # optional
                                    echo    => 1,           # optional
                                 );
    
    my $separator;
    if (@char_list) {
        if (@char_list == 1) {           # successful detection
            $separator = $char_list[0];
        } else {                         # several candidates passed the tests
            # Some code here
    } else {                             # no candidate passed the tests
        # Some code here
    }
    
    
    # "I'm Feeling Lucky" alternative interface
    # Don't forget to include the 'lucky' parameter
    
    my $separator = get_separator(
                                    path    => $csv_path,
                                    lucky   => 1, 
                                    exclude => $array1_ref, # optional
                                    include => $array2_ref, # optional
                                    echo    => 1,           # optional
                                 );