Extend SCIP function for Ecole

[zml72062]

Hey I'm trying to do the following: when SCIP takes the "vanilla full strong" strategy, it computes a strong branching score for each candidate by solving two LPs associated with it (rounding its solution for current LP relaxation up and down), now I want to extract the solutions for the (2*n_cands) LPs.

I find the following calling chain:

• ecole::observation::StrongBranchingScores::extract
• branchExeclpVanillafullstrong (scip/branch_vanillafullstrong.c)
• runVanillaStrongBranching (scip/branch_vanillafullstrong.c)
• SCIPgetVarStrongbranchInt or SCIPgetVarStrongbranchFrac (scip/scip_var.c)
• SCIPcolGetStrongbranch (scip/lp.c)
• SCIPlpiStrongbranchInt or SCIPlpiStrongbranchFrac (lpi/lpi_grb.c)
• lpiStrongbranch (lpi/lpi_grb.c)
• SCIPlpiSolveDual (lpi/lpi_grb.c)

The last function actually does the solving. Is there a graceful way to extract the solution produced by the last function? (By gracefully I mean avoiding modifying the source code of SCIP but only Ecole.)