### How to use Sage to find a pair of vertex-disjoint paths of minimal total length?

I want to find a pair of vertex-disjoint (s,t)-paths with minimal total length in a graph G, where the length is the sum of the edge weights of the paths. For this I would like to use the Suurballe and Tarjan Algorithm, but it seems to be a hidden (if I am right?) method. Is there any way I can still use this algorithm other than reprogram it myself?