Function SCIPcollectConstraintStatistics 

pub unsafe extern "C" fn SCIPcollectConstraintStatistics(
    scip: *mut SCIP,
    datatree: *mut SCIP_DATATREE,
) -> SCIP_RETCODE

collects constraint statistics

@pre This method can be called if SCIP is in one of the following stages: - \ref SCIP_STAGE_TRANSFORMED - \ref SCIP_STAGE_INITPRESOLVE - \ref SCIP_STAGE_PRESOLVING - \ref SCIP_STAGE_EXITPRESOLVE - \ref SCIP_STAGE_PRESOLVED - \ref SCIP_STAGE_SOLVING - \ref SCIP_STAGE_SOLVED