==> Fetching [wheels]
$VAR1 = undef;
==> Fetching [wheels, four, truck, utility, blah]
$VAR1 = {
          'car' => {
                     'plain' => {
                                  'sporty' => 'honda',
                                  'retro' => 'volkswagon'
                                },
                     'fancy' => {
                                  'silver' => 'maserati',
                                  'red' => 'ferrari'
                                }
                   },
          'truck' => {
                       'light' => {
                                    'chevy' => 'pickup'
                                  },
                       'utility' => {
                                      'city' => 'trash',
                                      'muni' => 'power',
                                      'us' => 'mail',
                                      'corp' => {
                                                  'dom' => 'dominion power',
                                                  'vap' => 'virginia power'
                                                }
                                    }
                     }
        };
==> Fetching [wheels, four, truck, utility, corp, dom]
$VAR1 = {
          'car' => {
                     'plain' => {
                                  'sporty' => 'honda',
                                  'retro' => 'volkswagon'
                                },
                     'fancy' => {
                                  'silver' => 'maserati',
                                  'red' => 'ferrari'
                                }
                   },
          'truck' => {
                       'light' => {
                                    'chevy' => 'pickup'
                                  },
                       'utility' => {
                                      'city' => 'trash',
                                      'muni' => 'power',
                                      'us' => 'mail',
                                      'corp' => {
                                                  'dom' => 'dominion power',
                                                  'vap' => 'virginia power'
                                                }
                                    }
                     }
        };