apollo-openapi/src/main/java/com/ctrip/framework/apollo/openapi/dto/OpenGrayReleaseRuleDTO.java/OpenGrayReleaseRuleDTO/setRuleItems
class OpenGrayReleaseRuleDTO:    public void setRuleItems(Set<OpenGrayReleaseRuleItemDTO> ruleItems) {
        this.ruleItems = ruleItems;
    }