Function SCIPcollectExpressionHandlerStatistics 

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

collects expression handler statistics

@pre This method can be called if SCIP is in one of the following stages: - \ref SCIP_STAGE_PROBLEM - \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