Code review comment for lp:~inspirated/launchpad/export-Person-getBugSubscriberPackages

The new diff uses webservice.named_get to test the method. Test results:

$ bin/test -cvvt xx-person.txt
Running tests at level 1
Running canonical.testing.layers.PageTestLayer tests:
  Set up canonical.testing.layers.BaseLayer in 0.024 seconds.
  Set up canonical.testing.layers.DatabaseLayer in 1.479 seconds.
  Set up canonical.testing.layers.LibrarianLayer in 14.752 seconds.
  Set up canonical.testing.layers.MemcachedLayer in 0.175 seconds.
  Set up canonical.testing.layers.LaunchpadLayer in 0.000 seconds.
  Set up canonical.testing.layers.FunctionalLayer in 9.167 seconds.
  Set up canonical.testing.layers.LaunchpadFunctionalLayer in 0.000 seconds.
  Set up canonical.testing.layers.GoogleServiceLayer in 3.470 seconds.
  Set up canonical.testing.layers.PageTestLayer in 0.011 seconds.
  Running:
 lib/lp/registry/tests/../stories/webservice/xx-person.txt
  Ran 54 tests with 0 failures and 0 errors in 51.925 seconds.
Tearing down left over layers:
  Tear down canonical.testing.layers.PageTestLayer in 0.000 seconds.
  Tear down canonical.testing.layers.LaunchpadFunctionalLayer in 0.000 seconds.
  Tear down canonical.testing.layers.LaunchpadLayer in 0.000 seconds.
  Tear down canonical.testing.layers.LibrarianLayer in 0.007 seconds.
  Tear down canonical.testing.layers.MemcachedLayer in 0.110 seconds.
  Tear down canonical.testing.layers.GoogleServiceLayer in 0.282 seconds.
  Tear down canonical.testing.layers.FunctionalLayer ... not supported
  Tear down canonical.testing.layers.DatabaseLayer in 0.192 seconds.
  Tear down canonical.testing.layers.BaseLayer in 0.000 seconds.