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  1. or download this
    use strict;
use warnings;
...
for my $emp ($wk1,$wk2,$wk3){
    $emp->PRINT();
}
  2. or download this
    return $self-> (name);   # INCORRECT SYNTAX (looks like subroutine par
+ameter)
  # vs. 
return $self-> {name};   # Braces indicate hash-element access