Could somebody explain me the following piece of code. Are the keys mentioned predefined? What does the following code do? 
StatView::Script->new({
 44     name          => 'stv_copy_key',
 45     version       => $VERSION,
 46     opt_spec      => [qw(
 47                             host=s
 48                             list_pollers
 49                             all_pollers
 50                     )],
 51     db_connection => [qw/ poller /],
 52     handler       => sub { StatView::CopySSHKey::run (@_) },
 53 });

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In reply to Perl "new" command by akagrawal3

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