reverseName is undefined ?

Sometimes when generate code to iOS, I have this error, I don't know why or how? 
When search "reverseName", I see this variable don't set any value in lib or project. So can you explain in file lib/objc-codegen.js line 172

``` js
  var scopeMethod = Object.create(method);
  scopeMethod.name = reverseName; // Error undefined here
```
