Function SCIPbendersGetSubproblemType 

pub unsafe extern "C" fn SCIPbendersGetSubproblemType(
    benders: *mut SCIP_BENDERS,
    probnumber: c_int,
) -> SCIP_BENDERSSUBTYPE

returns the type of the subproblem

This type is used to determine whether the duals of the problem can be used to generate cuts