boolean isAlwaysNotNull(String className, String methodName, String desc) {
      if (myClassName.equals(className)) {
        MethodInfo info = myMethodInfos.get(key(methodName, desc));
        return info != null && info.isStable && info.nullability.isNotNull();
      }
      return false;
    }
boolean isAlwaysNotNull(String className, String methodName, String desc)