public interface I {

    public void foo();
}
--
public class C1 {
  public void foo() {
     
  }    
}
--
public class C2 extends C1 implements I {
    
}
--
public class C3 {
    {
        new C2().foo(); // Perform rename method here
    }
}

Try to rename method C2.foo() to C2.xxx(). 

Method I.foo() will not be renamed along with C1.foo() even though it should be. C2 will not be compilable after this refactoring.