Function solver_factory_builder 

pub fn solver_factory_builder<S, D, C>(
    score_calculator: C,
) -> SolverFactoryBuilder<S, D, C, (), NoTermination>
where
    S: PlanningSolution,
    C: Fn(&S) -> S::Score + Send + Sync,

Creates a builder for SolverFactory.

Use SolverFactoryBuilder::new() directly for full type control.