https://openjdk.java.net/ 
final class org.graalvm.compiler.hotspot.replacements.PluginFactory_HotSpotReplacementsUtil$HotSpotReplacementsUtil_readLayoutHelper extends org.graalvm.compiler.nodes.graphbuilderconf.GeneratedInvocationPlugin
  minor version: 0
  major version: 59
  flags: flags: (0x0030) ACC_FINAL, ACC_SUPER
  this_class: org.graalvm.compiler.hotspot.replacements.PluginFactory_HotSpotReplacementsUtil$HotSpotReplacementsUtil_readLayoutHelper
  super_class: org.graalvm.compiler.nodes.graphbuilderconf.GeneratedInvocationPlugin
{
  private final org.graalvm.compiler.hotspot.GraalHotSpotVMConfig injectedGraalHotSpotVMConfig;
    descriptor: Lorg/graalvm/compiler/hotspot/GraalHotSpotVMConfig;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  public boolean execute(org.graalvm.compiler.nodes.graphbuilderconf.GraphBuilderContext, jdk.vm.ci.meta.ResolvedJavaMethod, org.graalvm.compiler.nodes.graphbuilderconf.InvocationPlugin$Receiver, org.graalvm.compiler.nodes.ValueNode[]);
    descriptor: (Lorg/graalvm/compiler/nodes/graphbuilderconf/GraphBuilderContext;Ljdk/vm/ci/meta/ResolvedJavaMethod;Lorg/graalvm/compiler/nodes/graphbuilderconf/InvocationPlugin$Receiver;[Lorg/graalvm/compiler/nodes/ValueNode;)Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=4, locals=7, args_size=5
        start local 0 // org.graalvm.compiler.hotspot.replacements.PluginFactory_HotSpotReplacementsUtil$HotSpotReplacementsUtil_readLayoutHelper this
        start local 1 // org.graalvm.compiler.nodes.graphbuilderconf.GraphBuilderContext b
        start local 2 // jdk.vm.ci.meta.ResolvedJavaMethod targetMethod
        start local 3 // org.graalvm.compiler.nodes.graphbuilderconf.InvocationPlugin$Receiver receiver
        start local 4 // org.graalvm.compiler.nodes.ValueNode[] args
         0: .line 1628
            aload 0 /* this */
            getfield org.graalvm.compiler.hotspot.replacements.PluginFactory_HotSpotReplacementsUtil$HotSpotReplacementsUtil_readLayoutHelper.injectedGraalHotSpotVMConfig:Lorg/graalvm/compiler/hotspot/GraalHotSpotVMConfig;
            astore 5 /* arg0 */
        start local 5 // org.graalvm.compiler.hotspot.GraalHotSpotVMConfig arg0
         1: .line 1629
            aload 4 /* args */
            iconst_0
            aaload
            astore 6 /* arg1 */
        start local 6 // org.graalvm.compiler.nodes.ValueNode arg1
         2: .line 1630
            aload 1 /* b */
            aload 2 /* targetMethod */
            aload 5 /* arg0 */
            aload 6 /* arg1 */
            invokestatic org.graalvm.compiler.hotspot.replacements.KlassLayoutHelperNode.intrinsify:(Lorg/graalvm/compiler/nodes/graphbuilderconf/GraphBuilderContext;Ljdk/vm/ci/meta/ResolvedJavaMethod;Lorg/graalvm/compiler/hotspot/GraalHotSpotVMConfig;Lorg/graalvm/compiler/nodes/ValueNode;)Z
            ireturn
        end local 6 // org.graalvm.compiler.nodes.ValueNode arg1
        end local 5 // org.graalvm.compiler.hotspot.GraalHotSpotVMConfig arg0
        end local 4 // org.graalvm.compiler.nodes.ValueNode[] args
        end local 3 // org.graalvm.compiler.nodes.graphbuilderconf.InvocationPlugin$Receiver receiver
        end local 2 // jdk.vm.ci.meta.ResolvedJavaMethod targetMethod
        end local 1 // org.graalvm.compiler.nodes.graphbuilderconf.GraphBuilderContext b
        end local 0 // org.graalvm.compiler.hotspot.replacements.PluginFactory_HotSpotReplacementsUtil$HotSpotReplacementsUtil_readLayoutHelper this
      LocalVariableTable:
        Start  End  Slot          Name  Signature
            0    3     0          this  Lorg/graalvm/compiler/hotspot/replacements/PluginFactory_HotSpotReplacementsUtil$HotSpotReplacementsUtil_readLayoutHelper;
            0    3     1             b  Lorg/graalvm/compiler/nodes/graphbuilderconf/GraphBuilderContext;
            0    3     2  targetMethod  Ljdk/vm/ci/meta/ResolvedJavaMethod;
            0    3     3      receiver  Lorg/graalvm/compiler/nodes/graphbuilderconf/InvocationPlugin$Receiver;
            0    3     4          args  [Lorg/graalvm/compiler/nodes/ValueNode;
            1    3     5          arg0  Lorg/graalvm/compiler/hotspot/GraalHotSpotVMConfig;
            2    3     6          arg1  Lorg/graalvm/compiler/nodes/ValueNode;
    MethodParameters:
              Name  Flags
      b             
      targetMethod  
      receiver      
      args          

  private void <init>(org.graalvm.compiler.nodes.graphbuilderconf.NodeIntrinsicPluginFactory$InjectionProvider);
    descriptor: (Lorg/graalvm/compiler/nodes/graphbuilderconf/NodeIntrinsicPluginFactory$InjectionProvider;)V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=3, locals=2, args_size=2
        start local 0 // org.graalvm.compiler.hotspot.replacements.PluginFactory_HotSpotReplacementsUtil$HotSpotReplacementsUtil_readLayoutHelper this
        start local 1 // org.graalvm.compiler.nodes.graphbuilderconf.NodeIntrinsicPluginFactory$InjectionProvider injection
         0: .line 1635
            aload 0 /* this */
            invokespecial org.graalvm.compiler.nodes.graphbuilderconf.GeneratedInvocationPlugin.<init>:()V
         1: .line 1636
            aload 0 /* this */
            aload 1 /* injection */
            ldc Lorg/graalvm/compiler/hotspot/GraalHotSpotVMConfig;
            invokeinterface org.graalvm.compiler.nodes.graphbuilderconf.NodeIntrinsicPluginFactory$InjectionProvider.getInjectedArgument:(Ljava/lang/Class;)Ljava/lang/Object;
            checkcast org.graalvm.compiler.hotspot.GraalHotSpotVMConfig
            putfield org.graalvm.compiler.hotspot.replacements.PluginFactory_HotSpotReplacementsUtil$HotSpotReplacementsUtil_readLayoutHelper.injectedGraalHotSpotVMConfig:Lorg/graalvm/compiler/hotspot/GraalHotSpotVMConfig;
         2: .line 1637
            return
        end local 1 // org.graalvm.compiler.nodes.graphbuilderconf.NodeIntrinsicPluginFactory$InjectionProvider injection
        end local 0 // org.graalvm.compiler.hotspot.replacements.PluginFactory_HotSpotReplacementsUtil$HotSpotReplacementsUtil_readLayoutHelper this
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0    3     0       this  Lorg/graalvm/compiler/hotspot/replacements/PluginFactory_HotSpotReplacementsUtil$HotSpotReplacementsUtil_readLayoutHelper;
            0    3     1  injection  Lorg/graalvm/compiler/nodes/graphbuilderconf/NodeIntrinsicPluginFactory$InjectionProvider;
    MethodParameters:
           Name  Flags
      injection  
}
SourceFile: "PluginFactory_HotSpotReplacementsUtil.java"
NestHost: org.graalvm.compiler.hotspot.replacements.PluginFactory_HotSpotReplacementsUtil
InnerClasses:
  private final HotSpotReplacementsUtil_readLayoutHelper = org.graalvm.compiler.hotspot.replacements.PluginFactory_HotSpotReplacementsUtil$HotSpotReplacementsUtil_readLayoutHelper of org.graalvm.compiler.hotspot.replacements.PluginFactory_HotSpotReplacementsUtil
  public abstract Receiver = org.graalvm.compiler.nodes.graphbuilderconf.InvocationPlugin$Receiver of org.graalvm.compiler.nodes.graphbuilderconf.InvocationPlugin
  public abstract InjectionProvider = org.graalvm.compiler.nodes.graphbuilderconf.NodeIntrinsicPluginFactory$InjectionProvider of org.graalvm.compiler.nodes.graphbuilderconf.NodeIntrinsicPluginFactory