return rules.remove(rule);
        }

        @Override
        public boolean hasRule(Rule rule) {
            return rules.contains(rule);
        }

        public List<Rule> getRules() {
            return new ArrayList<>(rules);
        }

        public void clearRules() {
            rules.clear();
        }
    }

    /**
     * Test ResponseProcessor implementation

        }

        public int getGetRuleCallCount() {
            return getRuleCallCount;
        }

        public void clearRules() {
            rules.clear();
        }

        public List<Rule> getRules() {
            return new ArrayList<>(rules);
        }
    }

    /**
     * Thread-safe implementation of RuleManager
     */
    public static class ThreadSafeRuleManager implements RuleManager {