package pkg;

import java.util.ArrayList;
import java.util.List;

public class TestClassCast {
   public void test(List var1) {
      Object var2 = var1;// 22
      if (var1 != null) {// 23
         ((List)(var2 = new ArrayList(var1))).add("23");// 24
      }

      System.out.println(((List)var2).size());// 26
   }// 27
}

class 'pkg/TestClassCast' {
   method 'test (Ljava/util/List;)V' {
      1      7
      3      8
      f      9
      10      9
      12      9
      18      12
      1c      12
      21      12
      24      13
   }
}

Lines mapping:
22 <-> 8
23 <-> 9
24 <-> 10
26 <-> 13
27 <-> 14