将内部接口方法名称保留在proguard中

可以说我有..

public class SomeClass { public interface someInterface { public void firstMethod(String variable); public void secondMethod(String variable); public void thirdMethod(); } } 

我做..

 -keep,includedescriptorclasses public class com.somepackage.SomeClass { <fields>; <methods>; } -keep public interface com.somepackage.someInterface {*;} 

我结束了

 public interface someInterface { public void a(String variable); public void a(String variable); public void a(); } 

如何确保此接口的方法名称不会被混淆,同时还会混淆其余的类?

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