def filter(type=nil, *options)
      type ? (@attributes[:filter] = Search::Filter.new(type, *options).to_hash and return self ) : @attributes[:filter]
    end
def filter(type=nil, *options)
      type ? (@attributes[:filter] = Search::Filter.new(type, *options).to_hash and return self ) : @attributes[:filter]
    end
Get or set the alias routing