SI-7883 - don't iterate over all keys in MapWrapper.containsKey()
SI-7883: Added a comment per CR feedback from @adriaanm, @Ichoran
Update description of explicitouter phase.

Patern translation now happens earlier.
Merge pull request #3006 from ivmaykov/master

SI-7883 - don't iterate over all keys in MapWrapper.containsKey()
Merge pull request #3077 from retronym/topic/phase-desc

Update description of explicitouter phase.