[Haskell-cafe] Building a better dog house?

I was just looking at my UML (Unified Modeling Language) User Guide and discovered this: "The number of object-oriented methods increased from fewer than 10 to more than 50 during the period between 1989 and 1994." pg. xviii, Booch, Rumbaugh, Jacobson, 1999 Is there a modeling methodology recommended for functional languages? Michael