Create a named Diffy comparison from the last two uploaded snapshots.
Then (I |we )*create diffy comparison with name "([^"]*)"
Example #1: Then create diffy comparison with name "release-2.0"
Example #2: Then create diffy comparison with name "nightly"
Example #3: Then create diffy comparison with name "smoke-run-42"
Example #4: Then create diffy comparison with name "webship.co-regression"
Example #5: Then create diffy comparison with name "before-vs-after"
Example #6: Then create diffy comparison with name "homepage-baseline-vs-changed"