rulebook-core/src/main/java/com/deliveredtechnologies/rulebook/lang/RuleBookBuilder.java
public RuleBookAddRuleBuilder<T> addRule(Consumer<RuleBookRuleBuilder<T>> consumer) {
    return new RuleBookAddRuleBuilder<>(newRuleBook(), consumer);
  }
public RuleBookAddRuleBuilder<T> addRule(Consumer<RuleBookRuleBuilder<T>> consumer) {
    return new RuleBookAddRuleBuilder<>(newRuleBook(), consumer);
  }
Adds a rule to the RuleBook.
@param consumer  functional interface that supplies a RuleBookRuleBuilder for building a Rule
@return          a builder with the added Rule