https://www.graalvm.org/ 
class com.oracle.truffle.tools.profiler.HeapMonitorSnippets
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: com.oracle.truffle.tools.profiler.HeapMonitorSnippets
  super_class: java.lang.Object
{
  void <init>();
    descriptor: ()V
    flags: (0x0000) 
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.oracle.truffle.tools.profiler.HeapMonitorSnippets this
         0: .line 447
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // com.oracle.truffle.tools.profiler.HeapMonitorSnippets this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/oracle/truffle/tools/profiler/HeapMonitorSnippets;

  public void example();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=8, args_size=1
        start local 0 // com.oracle.truffle.tools.profiler.HeapMonitorSnippets this
         0: .line 453
            aconst_null
            astore 1
            aconst_null
            astore 2
         1: iconst_0
            anewarray java.lang.String
            invokestatic org.graalvm.polyglot.Context.create:([Ljava/lang/String;)Lorg/graalvm/polyglot/Context;
            astore 3 /* context */
        start local 3 // org.graalvm.polyglot.Context context
         2: .line 454
            aload 3 /* context */
            invokevirtual org.graalvm.polyglot.Context.getEngine:()Lorg/graalvm/polyglot/Engine;
            invokestatic com.oracle.truffle.tools.profiler.HeapMonitor.find:(Lorg/graalvm/polyglot/Engine;)Lcom/oracle/truffle/tools/profiler/HeapMonitor;
            astore 4 /* monitor */
        start local 4 // com.oracle.truffle.tools.profiler.HeapMonitor monitor
         3: .line 455
            aload 4 /* monitor */
            iconst_1
            invokevirtual com.oracle.truffle.tools.profiler.HeapMonitor.setCollecting:(Z)V
         4: .line 456
            new java.lang.Thread
            dup
            aload 3 /* context */
            invokedynamic run(Lorg/graalvm/polyglot/Context;)Ljava/lang/Runnable;
              Bootstrap: invokestatic java.lang.invoke.LambdaMetafactory.metafactory:(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodHandle;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite;
                Method arguments:
                  ()V
                  com/oracle/truffle/tools/profiler/HeapMonitorSnippets.lambda$0(Lorg/graalvm/polyglot/Context;)V (6)
                  ()V
            invokespecial java.lang.Thread.<init>:(Ljava/lang/Runnable;)V
            astore 5 /* thread */
        start local 5 // java.lang.Thread thread
         5: .line 459
            aload 5 /* thread */
            invokevirtual java.lang.Thread.start:()V
         6: .line 460
            iconst_0
            istore 6 /* i */
        start local 6 // int i
         7: goto 13
         8: .line 461
      StackMap locals: com.oracle.truffle.tools.profiler.HeapMonitorSnippets java.lang.Throwable java.lang.Throwable org.graalvm.polyglot.Context com.oracle.truffle.tools.profiler.HeapMonitor java.lang.Thread int
      StackMap stack:
            aload 4 /* monitor */
            invokevirtual com.oracle.truffle.tools.profiler.HeapMonitor.takeSummary:()Lcom/oracle/truffle/tools/profiler/HeapSummary;
            astore 7 /* summary */
        start local 7 // com.oracle.truffle.tools.profiler.HeapSummary summary
         9: .line 462
            aload 7 /* summary */
            invokevirtual com.oracle.truffle.tools.profiler.HeapSummary.getAliveInstances:()J
            pop2
        10: .line 463
            aload 7 /* summary */
            invokevirtual com.oracle.truffle.tools.profiler.HeapSummary.getTotalInstances:()J
            pop2
        11: .line 465
            ldc 100
            invokestatic java.lang.Thread.sleep:(J)V
        end local 7 // com.oracle.truffle.tools.profiler.HeapSummary summary
        12: .line 460
            iinc 6 /* i */ 1
      StackMap locals:
      StackMap stack:
        13: iload 6 /* i */
            bipush 10
            if_icmplt 8
        end local 6 // int i
        14: .line 467
            aload 4 /* monitor */
            iconst_0
            invokevirtual com.oracle.truffle.tools.profiler.HeapMonitor.setCollecting:(Z)V
        end local 5 // java.lang.Thread thread
        end local 4 // com.oracle.truffle.tools.profiler.HeapMonitor monitor
        15: .line 468
            aload 3 /* context */
            ifnull 21
            aload 3 /* context */
            invokevirtual org.graalvm.polyglot.Context.close:()V
            goto 21
      StackMap locals: com.oracle.truffle.tools.profiler.HeapMonitorSnippets java.lang.Throwable java.lang.Throwable org.graalvm.polyglot.Context
      StackMap stack: java.lang.Throwable
        16: astore 1
            aload 3 /* context */
            ifnull 17
            aload 3 /* context */
            invokevirtual org.graalvm.polyglot.Context.close:()V
        end local 3 // org.graalvm.polyglot.Context context
      StackMap locals:
      StackMap stack:
        17: aload 1
            athrow
      StackMap locals:
      StackMap stack: java.lang.Throwable
        18: astore 2
            aload 1
            ifnonnull 19
            aload 2
            astore 1
            goto 20
      StackMap locals:
      StackMap stack:
        19: aload 1
            aload 2
            if_acmpeq 20
            aload 1
            aload 2
            invokevirtual java.lang.Throwable.addSuppressed:(Ljava/lang/Throwable;)V
      StackMap locals:
      StackMap stack:
        20: aload 1
            athrow
        21: .line 472
      StackMap locals:
      StackMap stack:
            return
        end local 0 // com.oracle.truffle.tools.profiler.HeapMonitorSnippets this
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0   22     0     this  Lcom/oracle/truffle/tools/profiler/HeapMonitorSnippets;
            2   17     3  context  Lorg/graalvm/polyglot/Context;
            3   15     4  monitor  Lcom/oracle/truffle/tools/profiler/HeapMonitor;
            5   15     5   thread  Ljava/lang/Thread;
            7   14     6        i  I
            9   12     7  summary  Lcom/oracle/truffle/tools/profiler/HeapSummary;
      Exception table:
        from    to  target  type
           2    15      16  any
           1    18      18  any
    Exceptions:
      throws java.lang.InterruptedException

  private static void lambda$0(org.graalvm.polyglot.Context);
    descriptor: (Lorg/graalvm/polyglot/Context;)V
    flags: (0x100a) ACC_PRIVATE, ACC_STATIC, ACC_SYNTHETIC
    Code:
      stack=3, locals=1, args_size=1
         0: .line 457
            aload 0
            ldc "..."
            ldc "..."
            invokevirtual org.graalvm.polyglot.Context.eval:(Ljava/lang/String;Ljava/lang/CharSequence;)Lorg/graalvm/polyglot/Value;
            pop
         1: .line 458
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature
}
SourceFile: "HeapMonitor.java"
InnerClasses:
  public final Lookup = java.lang.invoke.MethodHandles$Lookup of java.lang.invoke.MethodHandles