In Discover, it is possible to build segments based on rules around the
Entry and Exit values of each and every traffic variable. However, it is
not possible to do so in SiteCatalyst v15 and in Data Warehouse for
SiteCatalyst-pathing props. So - in other words - if Pathing is enabled
on Site Sections, we would also like it to be possible to build a
segment container with a rule which evaluates Entry Site Section.