inconsistent stack height -1 错误解决方案

异常如下：
java.lang.RuntimeException: [source error] getPropertyValue (Ljava/lang/Object;Ljava/lang/String;)Ljava/lang/Object; in org.apache.dubbo.common.bytecode.Wrapper0: inconsistent stack height -1
at org.apache.dubbo.common.bytecode.ClassGenerator.toClass(ClassGenerator.java:348) ~[dubbo-2.7.6.jar:2.7.6]
at org.apache.dubbo.common.bytecode.ClassGenerator.toClass(ClassGenerator.java:287) ~[dubbo-2.7.6.jar:2.7.6]
at org.apache.dubbo.common.bytecode.Wrapper.makeWrapper(Wrapper.java:256) ~[dubbo-2.7.6.jar:2.7.6]
at org.apache.dubbo.common.bytecode.Wrapper.lambda$getWrapper$0(Wrapper.java:116)[dubbo-2.7.6.jar:2.7.6]atjava.util.concurrent.ConcurrentHashMap.computeIfAbsent(ConcurrentHashMap.java:1660)[na:1.8.0_{9}2]atorg.apache.dubbo.common.bytecode.Wrapper.getWrapper(Wrapper.java:116)[dubbo-2.7.6.jar:2.7.6]atorg.apache.dubbo.config.ServiceConfig.doExportUrlsFor1Protocol(ServiceConfig.java:416)[dubbo-2.7.6.jar:2.7.6]atorg.apache.dubbo.config.ServiceConfig.doExportUrls(ServiceConfig.java:325)[dubbo-2.7.6.jar:2.7.6]atorg.apache.dubbo.config.ServiceConfig.doExport(ServiceConfig.java:300)[dubbo-2.7.6.jar:2.7.6]atorg.apache.dubbo.config.ServiceConfig.export(ServiceConfig.java:206)[dubbo-2.7.6.jar:2.7.6]atorg.apache.dubbo.config.bootstrap.DubboBootstrap.lambda$exportServices$15(DubboBootstrap.java:917)[dubbo-2.7.6.jar:2.7.6]atjava.util.HashMap$Values.forEach(HashMap.java:980) ~[na:1.8.0_92]

由于在添加接口之前，一切都是正常的，因此可以排除 dubbo 版本问题，在网上查找资料说可能是由于提供的接口以 getXXX 开头，而且接口没有返回值，从而出现此种异常。因此试着先把问题给解决了，就按文章说的，把接口名称给改了，不以 get 开头，经验证，确实是此原因。那么为什么会有这么奇怪的现象出现呢？查看了下 dubbo 源码，dubbo 动态生成代码

 return ($w) w.getFilterRuleToRedis()

出现了问题。这是因为这样的方法，dubbo 暴露服务的时候把它当成获取属性方法来编译，然后出现类型转化报错。
参考链接：https://blog.csdn.net/henlf/article/details/81674517