to_svg

# File actionpack/lib/action_dispatch/journey/gtg/transition_table.rb, line 115
        def to_svg
          svg = IO.popen("dot -Tsvg", "w+") { |f|
            f.write(to_dot)
            f.close_write
            f.readlines
          }
          3.times { svg.shift }
          svg.join.sub(/width="[^"]*"/, "").sub(/height="[^"]*"/, "")
        end