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  1. or download this
    bless { hash => {} }, $class;
...
$object->{hash}->{key_inside_that};
  2. or download this
    $object->{hash}{key_inside_that},
$$object{hash}{key_inside_that},
${${$object}{hash}}{key_inside_that}
  3. or download this
    bless \{ hash => \{} }, $class;
...
${$$object->{hash}}->{key_inside_that};
${${${$object}}{hash}}{key_inside_that};
# etcetera...