https://www.graalvm.org/ 
final class org.graalvm.compiler.loop.DefaultLoopPolicies$CountingClosure implements org.graalvm.compiler.nodes.VirtualState$VirtualClosure
  minor version: 0
  major version: 59
  flags: flags: (0x0030) ACC_FINAL, ACC_SUPER
  this_class: org.graalvm.compiler.loop.DefaultLoopPolicies$CountingClosure
  super_class: java.lang.Object
{
  int count;
    descriptor: I
    flags: (0x0000) 

  private void <init>();
    descriptor: ()V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.graalvm.compiler.loop.DefaultLoopPolicies$CountingClosure this
         0: .line 210
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // org.graalvm.compiler.loop.DefaultLoopPolicies$CountingClosure this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/graalvm/compiler/loop/DefaultLoopPolicies$CountingClosure;

  public void apply(org.graalvm.compiler.nodes.VirtualState);
    descriptor: (Lorg/graalvm/compiler/nodes/VirtualState;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=2, args_size=2
        start local 0 // org.graalvm.compiler.loop.DefaultLoopPolicies$CountingClosure this
        start local 1 // org.graalvm.compiler.nodes.VirtualState node
         0: .line 215
            aload 0 /* this */
            dup
            getfield org.graalvm.compiler.loop.DefaultLoopPolicies$CountingClosure.count:I
            iconst_1
            iadd
            putfield org.graalvm.compiler.loop.DefaultLoopPolicies$CountingClosure.count:I
         1: .line 216
            return
        end local 1 // org.graalvm.compiler.nodes.VirtualState node
        end local 0 // org.graalvm.compiler.loop.DefaultLoopPolicies$CountingClosure this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lorg/graalvm/compiler/loop/DefaultLoopPolicies$CountingClosure;
            0    2     1  node  Lorg/graalvm/compiler/nodes/VirtualState;
    MethodParameters:
      Name  Flags
      node  
}
SourceFile: "DefaultLoopPolicies.java"
NestHost: org.graalvm.compiler.loop.DefaultLoopPolicies
InnerClasses:
  private final CountingClosure = org.graalvm.compiler.loop.DefaultLoopPolicies$CountingClosure of org.graalvm.compiler.loop.DefaultLoopPolicies
  public abstract VirtualClosure = org.graalvm.compiler.nodes.VirtualState$VirtualClosure of org.graalvm.compiler.nodes.VirtualState