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&{ 
   # code here returns a value,
   # that's interpreted as the name
   # of the subroutine to call...
 }

my $subroutine = sub {
     # code here defines an anonymous sub
};

$subroutine->( @arguments ); #call sub

unless ($newSeriesSth->execute()) {
   # error handling
}

-- 
Joost       downtime n. The period during which a system
            is error-free and immune from user input.