As I was leaving the Dunkin’ Brands road show appearance this Wednesday at the Manhattan St. Regis — a splendid affair with filet mignon, served chilled, and then topped off with a cup of delicious Baskin-Robbins ice cream for the 500 or so attendees — I listened to two youngish analyst-types discuss what they had just witnessed.  One analyst asked, “Now, why is Dunkin’ Brands doing this?” And the other immediately retorted, “Come on, it’s for the limited partner fees and the dividend.”