import com.sun.xml.internal.ws.policy.sourcemodel.PolicyModelTranslator; //导入依赖的package包/类
private void readPolicy(final XMLEventReader reader) throws PolicyException {
    final PolicySourceModel policyModel = POLICY_UNMARSHALLER.unmarshalModel(reader);
    final PolicyModelTranslator translator = PolicyModelTranslator.getTranslator();
    final Policy policy = translator.translate(policyModel);
    if (this.currentUri != null) {
        map.put(this.currentUri, policy);
        this.currentUri = null;
        this.currentPolicy = null;
    }
    else {
        this.currentPolicy = policy;
    }
}