# File lib/puppet/simple_graph.rb, line 27
27:     def adjacent(options)
28:       direction = options[:direction] || :out
29:       options[:type] ||= :vertices
30: 
31:       return send(direction.to_s + "_edges") if options[:type] == :edges
32: 
33:       @adjacencies[direction].keys.reject { |vertex| @adjacencies[direction][vertex].empty? }
34:     end