$ fuse_init_unref.pl | grep private
          'private' => 'PRIVDAT'
          'private' => 2,
          'private' => 0
          'private' => ' => ',
          'private' => 0,
          'private' => [
          'private' => undef,
          'private' => undef,
          'private' => undef,
          'private' => '',