main::(test.pl:16):     my $refGenes = $db->fetch_select(tables => {'refGene.name' => 'refLink.mrnaAcc'},
main::(test.pl:17):                                      where => ['refGene.name like ?','NM_0002%']);
  DB<1> 
Can't locate object method "fetch_select" via package "Bio::DB::UCSC::DB" at test.pl line 16.
 at test.pl line 16
Debugged program terminated.  Use q to quit or R to restart,