package pkg;

public class TestClassNestedInitializer {
   public String secret;

   public void test() {
      TestClassNestedInitializer var1 = new TestClassNestedInitializer() {
         {
            this.secret = "one";
         }
      };// 22
      System.out.println(var1.secret);// 23
   }// 24
}

class 'pkg/TestClassNestedInitializer$1' {
   method '<init> (Lpkg/TestClassNestedInitializer;)V' {
      a      8
      c      8
      f      9
   }
}

class 'pkg/TestClassNestedInitializer' {
   method 'test ()V' {
      8      10
      9      11
      d      11
      10      11
      13      12
   }
}

Lines mapping:
22 <-> 11
23 <-> 12
24 <-> 13