https://www.graalvm.org/ 
public abstract class org.graalvm.compiler.graph.NodeWorkList implements java.lang.Iterable<org.graalvm.compiler.graph.Node>
  minor version: 0
  major version: 59
  flags: flags: (0x0421) ACC_PUBLIC, ACC_SUPER, ACC_ABSTRACT
  this_class: org.graalvm.compiler.graph.NodeWorkList
  super_class: java.lang.Object
{
  protected final java.util.Queue<org.graalvm.compiler.graph.Node> worklist;
    descriptor: Ljava/util/Queue;
    flags: (0x0014) ACC_PROTECTED, ACC_FINAL
    Signature: Ljava/util/Queue<Lorg/graalvm/compiler/graph/Node;>;

  private void <init>(org.graalvm.compiler.graph.Graph, boolean);
    descriptor: (Lorg/graalvm/compiler/graph/Graph;Z)V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=3, locals=6, args_size=3
        start local 0 // org.graalvm.compiler.graph.NodeWorkList this
        start local 1 // org.graalvm.compiler.graph.Graph graph
        start local 2 // boolean fill
         0: .line 38
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 39
            iload 2 /* fill */
            ifeq 9
         2: .line 40
            new java.util.ArrayDeque
            dup
            aload 1 /* graph */
            invokevirtual org.graalvm.compiler.graph.Graph.getNodeCount:()I
            invokespecial java.util.ArrayDeque.<init>:(I)V
            astore 3 /* deque */
        start local 3 // java.util.ArrayDeque deque
         3: .line 41
            aload 1 /* graph */
            invokevirtual org.graalvm.compiler.graph.Graph.getNodes:()Lorg/graalvm/compiler/graph/iterators/NodeIterable;
            invokeinterface org.graalvm.compiler.graph.iterators.NodeIterable.iterator:()Ljava/util/Iterator;
            astore 5
            goto 6
      StackMap locals: org.graalvm.compiler.graph.NodeWorkList org.graalvm.compiler.graph.Graph int java.util.ArrayDeque top java.util.Iterator
      StackMap stack:
         4: aload 5
            invokeinterface java.util.Iterator.next:()Ljava/lang/Object;
            checkcast org.graalvm.compiler.graph.Node
            astore 4 /* node */
        start local 4 // org.graalvm.compiler.graph.Node node
         5: .line 42
            aload 3 /* deque */
            aload 4 /* node */
            invokevirtual java.util.ArrayDeque.add:(Ljava/lang/Object;)Z
            pop
        end local 4 // org.graalvm.compiler.graph.Node node
         6: .line 41
      StackMap locals:
      StackMap stack:
            aload 5
            invokeinterface java.util.Iterator.hasNext:()Z
            ifne 4
         7: .line 44
            aload 0 /* this */
            aload 3 /* deque */
            putfield org.graalvm.compiler.graph.NodeWorkList.worklist:Ljava/util/Queue;
        end local 3 // java.util.ArrayDeque deque
         8: .line 45
            goto 10
         9: .line 46
      StackMap locals: org.graalvm.compiler.graph.NodeWorkList org.graalvm.compiler.graph.Graph int
      StackMap stack:
            aload 0 /* this */
            new java.util.ArrayDeque
            dup
            invokespecial java.util.ArrayDeque.<init>:()V
            putfield org.graalvm.compiler.graph.NodeWorkList.worklist:Ljava/util/Queue;
        10: .line 48
      StackMap locals:
      StackMap stack:
            return
        end local 2 // boolean fill
        end local 1 // org.graalvm.compiler.graph.Graph graph
        end local 0 // org.graalvm.compiler.graph.NodeWorkList this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0   11     0   this  Lorg/graalvm/compiler/graph/NodeWorkList;
            0   11     1  graph  Lorg/graalvm/compiler/graph/Graph;
            0   11     2   fill  Z
            3    8     3  deque  Ljava/util/ArrayDeque<Lorg/graalvm/compiler/graph/Node;>;
            5    6     4   node  Lorg/graalvm/compiler/graph/Node;
    MethodParameters:
       Name  Flags
      graph  
      fill   

  public void addAll(java.lang.Iterable<? extends org.graalvm.compiler.graph.Node>);
    descriptor: (Ljava/lang/Iterable;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=4, args_size=2
        start local 0 // org.graalvm.compiler.graph.NodeWorkList this
        start local 1 // java.lang.Iterable nodes
         0: .line 51
            aload 1 /* nodes */
            invokeinterface java.lang.Iterable.iterator:()Ljava/util/Iterator;
            astore 3
            goto 4
      StackMap locals: org.graalvm.compiler.graph.NodeWorkList java.lang.Iterable top java.util.Iterator
      StackMap stack:
         1: aload 3
            invokeinterface java.util.Iterator.next:()Ljava/lang/Object;
            checkcast org.graalvm.compiler.graph.Node
            astore 2 /* node */
        start local 2 // org.graalvm.compiler.graph.Node node
         2: .line 52
            aload 2 /* node */
            invokevirtual org.graalvm.compiler.graph.Node.isAlive:()Z
            ifeq 4
         3: .line 53
            aload 0 /* this */
            aload 2 /* node */
            invokevirtual org.graalvm.compiler.graph.NodeWorkList.add:(Lorg/graalvm/compiler/graph/Node;)V
        end local 2 // org.graalvm.compiler.graph.Node node
         4: .line 51
      StackMap locals:
      StackMap stack:
            aload 3
            invokeinterface java.util.Iterator.hasNext:()Z
            ifne 1
         5: .line 56
            return
        end local 1 // java.lang.Iterable nodes
        end local 0 // org.graalvm.compiler.graph.NodeWorkList this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    6     0   this  Lorg/graalvm/compiler/graph/NodeWorkList;
            0    6     1  nodes  Ljava/lang/Iterable<+Lorg/graalvm/compiler/graph/Node;>;
            2    4     2   node  Lorg/graalvm/compiler/graph/Node;
    Signature: (Ljava/lang/Iterable<+Lorg/graalvm/compiler/graph/Node;>;)V
    MethodParameters:
       Name  Flags
      nodes  

  public abstract void add(org.graalvm.compiler.graph.Node);
    descriptor: (Lorg/graalvm/compiler/graph/Node;)V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
      Name  Flags
      node  

  public abstract boolean contains(org.graalvm.compiler.graph.Node);
    descriptor: (Lorg/graalvm/compiler/graph/Node;)Z
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
      Name  Flags
      node  
}
Signature: Ljava/lang/Object;Ljava/lang/Iterable<Lorg/graalvm/compiler/graph/Node;>;
SourceFile: "NodeWorkList.java"
NestMembers:
  org.graalvm.compiler.graph.NodeWorkList$IterativeNodeWorkList  org.graalvm.compiler.graph.NodeWorkList$IterativeNodeWorkList$1  org.graalvm.compiler.graph.NodeWorkList$QueueConsumingIterator  org.graalvm.compiler.graph.NodeWorkList$SingletonNodeWorkList  org.graalvm.compiler.graph.NodeWorkList$SingletonNodeWorkList$1
InnerClasses:
  public final IterativeNodeWorkList = org.graalvm.compiler.graph.NodeWorkList$IterativeNodeWorkList of org.graalvm.compiler.graph.NodeWorkList
  private abstract QueueConsumingIterator = org.graalvm.compiler.graph.NodeWorkList$QueueConsumingIterator of org.graalvm.compiler.graph.NodeWorkList
  public final SingletonNodeWorkList = org.graalvm.compiler.graph.NodeWorkList$SingletonNodeWorkList of org.graalvm.compiler.graph.NodeWorkList