def getHeavyRotation(user=nil,type=nil,friends=nil,limit=nil,extras=nil)
      method = 'getHeavyRotation'
      cls = TODO
      if type == 'artist'
        cls = Artist
      elsif type == 'album'
        cls = Album
      end
      args = {}
      args[:user] = user if user
      args[:type] = type if type
      args[:friends] = friends if friends
      args[:limit] = limit if limit
      args[:extras] = extras if extras
      return_object cls,method,args
    end
def getHeavyRotation(user=nil,type=nil,friends=nil,limit=nil,extras=nil)
      method = 'getHeavyRotation'
      cls = TODO
      if type == 'artist'
        cls = Artist
      elsif type == 'album'
        cls = Album
      end
      args = {}
      args[:user] = user if user
      args[:type] = type if type
      args[:friends] = friends if friends
      args[:limit] = limit if limit
      args[:extras] = extras if extras
      return_object cls,method,args
    end
Find the most popular artists or albums for a user, their friends
 or the whole site.