This conflict resolver uses Integer value priorities assigned to rules.
You can set priorities with the setPriority(RuleSpecification, int) method.
The activations of rules with the lowest priority value will be the next activations.
Sets the priority for the given specification.
The activations of rules with the lowest priority value will be the next activations
while rules with higher priority values will only be included in the conflicting activations set.
The default priority is 0 for all rules.