https://www.graalvm.org/ 
class org.graalvm.compiler.graph.Graph$ChainedNodeEventListener extends org.graalvm.compiler.graph.Graph$NodeEventListener
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: org.graalvm.compiler.graph.Graph$ChainedNodeEventListener
  super_class: org.graalvm.compiler.graph.Graph$NodeEventListener
{
  org.graalvm.compiler.graph.Graph$NodeEventListener head;
    descriptor: Lorg/graalvm/compiler/graph/Graph$NodeEventListener;
    flags: (0x0000) 

  org.graalvm.compiler.graph.Graph$NodeEventListener next;
    descriptor: Lorg/graalvm/compiler/graph/Graph$NodeEventListener;
    flags: (0x0000) 

  void <init>(org.graalvm.compiler.graph.Graph$NodeEventListener, org.graalvm.compiler.graph.Graph$NodeEventListener);
    descriptor: (Lorg/graalvm/compiler/graph/Graph$NodeEventListener;Lorg/graalvm/compiler/graph/Graph$NodeEventListener;)V
    flags: (0x0000) 
    Code:
      stack=2, locals=3, args_size=3
        start local 0 // org.graalvm.compiler.graph.Graph$ChainedNodeEventListener this
        start local 1 // org.graalvm.compiler.graph.Graph$NodeEventListener head
        start local 2 // org.graalvm.compiler.graph.Graph$NodeEventListener next
         0: .line 639
            aload 0 /* this */
            invokespecial org.graalvm.compiler.graph.Graph$NodeEventListener.<init>:()V
         1: .line 640
            aload 0 /* this */
            aload 1 /* head */
            putfield org.graalvm.compiler.graph.Graph$ChainedNodeEventListener.head:Lorg/graalvm/compiler/graph/Graph$NodeEventListener;
         2: .line 641
            aload 0 /* this */
            aload 2 /* next */
            putfield org.graalvm.compiler.graph.Graph$ChainedNodeEventListener.next:Lorg/graalvm/compiler/graph/Graph$NodeEventListener;
         3: .line 642
            return
        end local 2 // org.graalvm.compiler.graph.Graph$NodeEventListener next
        end local 1 // org.graalvm.compiler.graph.Graph$NodeEventListener head
        end local 0 // org.graalvm.compiler.graph.Graph$ChainedNodeEventListener this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    4     0  this  Lorg/graalvm/compiler/graph/Graph$ChainedNodeEventListener;
            0    4     1  head  Lorg/graalvm/compiler/graph/Graph$NodeEventListener;
            0    4     2  next  Lorg/graalvm/compiler/graph/Graph$NodeEventListener;
    MethodParameters:
      Name  Flags
      head  
      next  

  public void changed(org.graalvm.compiler.graph.Graph$NodeEvent, org.graalvm.compiler.graph.Node);
    descriptor: (Lorg/graalvm/compiler/graph/Graph$NodeEvent;Lorg/graalvm/compiler/graph/Node;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=3, args_size=3
        start local 0 // org.graalvm.compiler.graph.Graph$ChainedNodeEventListener this
        start local 1 // org.graalvm.compiler.graph.Graph$NodeEvent e
        start local 2 // org.graalvm.compiler.graph.Node node
         0: .line 646
            aload 0 /* this */
            getfield org.graalvm.compiler.graph.Graph$ChainedNodeEventListener.head:Lorg/graalvm/compiler/graph/Graph$NodeEventListener;
            aload 1 /* e */
            aload 2 /* node */
            invokevirtual org.graalvm.compiler.graph.Graph$NodeEventListener.event:(Lorg/graalvm/compiler/graph/Graph$NodeEvent;Lorg/graalvm/compiler/graph/Node;)V
         1: .line 647
            aload 0 /* this */
            getfield org.graalvm.compiler.graph.Graph$ChainedNodeEventListener.next:Lorg/graalvm/compiler/graph/Graph$NodeEventListener;
            aload 1 /* e */
            aload 2 /* node */
            invokevirtual org.graalvm.compiler.graph.Graph$NodeEventListener.event:(Lorg/graalvm/compiler/graph/Graph$NodeEvent;Lorg/graalvm/compiler/graph/Node;)V
         2: .line 648
            return
        end local 2 // org.graalvm.compiler.graph.Node node
        end local 1 // org.graalvm.compiler.graph.Graph$NodeEvent e
        end local 0 // org.graalvm.compiler.graph.Graph$ChainedNodeEventListener this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lorg/graalvm/compiler/graph/Graph$ChainedNodeEventListener;
            0    3     1     e  Lorg/graalvm/compiler/graph/Graph$NodeEvent;
            0    3     2  node  Lorg/graalvm/compiler/graph/Node;
    MethodParameters:
      Name  Flags
      e     
      node  
}
SourceFile: "Graph.java"
NestHost: org.graalvm.compiler.graph.Graph
InnerClasses:
  private ChainedNodeEventListener = org.graalvm.compiler.graph.Graph$ChainedNodeEventListener of org.graalvm.compiler.graph.Graph
  public final NodeEvent = org.graalvm.compiler.graph.Graph$NodeEvent of org.graalvm.compiler.graph.Graph
  public abstract NodeEventListener = org.graalvm.compiler.graph.Graph$NodeEventListener of org.graalvm.compiler.graph.Graph