@nodeset 

 id

 6

 5

 4

 3

 2

 1

 0

 @edgeset 

                 id      length

 5       6       9       4

 4       6       8       2

 3       5       7       1

 2       5       6       3

 2       6       5       5

 2       4       4       2

 1       4       3       3

 0       3       2       1

 0       2       1       2

 0       1       0       3

 @nodes 

 source 0

 target 6

 @edges 

 @attributes 

 @end