public final class TestPrivateEmptyConstructor {
   private TestPrivateEmptyConstructor() {
   }// 4

   public final void test() {
      System.out.println("test");// 7
   }// 8
}

class 'TestPrivateEmptyConstructor' {
   method '<init> ()V' {
      4      2
   }

   method 'test ()V' {
      0      5
      3      5
      5      5
      8      6
   }
}

Lines mapping:
4 <-> 3
7 <-> 6
8 <-> 7