Parameters
See RuleOptions
Returns
RuleEntry<"assignment-priority", object & RuleOptions>
Soft constraint. The solver adds a bonus for each assignment of the
targeted members, making them more likely to appear on the schedule.
Use priority to control how strong the nudge is; higher priority
means a larger bonus. Even at "MANDATORY" strength the solver can
still leave a member unassigned if hard constraints prevent it.
Opposite of avoidAssignment. Both map to the same underlying
assignment-priority rule with different directions.