Function SCIPheurPassSolAddSol 

pub unsafe extern "C" fn SCIPheurPassSolAddSol(
    scip: *mut SCIP,
    heur: *mut SCIP_HEUR,
    sol: *mut SCIP_SOL,
) -> SCIP_RETCODE

pass solution to trysol heuristic which just gets added (without checking feasibility