https://www.graalvm.org/ 
class org.graalvm.compiler.graph.NodeClass$1 implements org.graalvm.compiler.graph.NodeClass$InplaceUpdateClosure
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: org.graalvm.compiler.graph.NodeClass$1
  super_class: java.lang.Object
{
  private final org.graalvm.collections.EconomicMap val$newNodes;
    descriptor: Lorg/graalvm/collections/EconomicMap;
    flags: (0x1012) ACC_PRIVATE, ACC_FINAL, ACC_SYNTHETIC

  private final org.graalvm.compiler.graph.Graph$DuplicationReplacement val$replacements;
    descriptor: Lorg/graalvm/compiler/graph/Graph$DuplicationReplacement;
    flags: (0x1012) ACC_PRIVATE, ACC_FINAL, ACC_SYNTHETIC

  private final org.graalvm.compiler.graph.Graph val$graph;
    descriptor: Lorg/graalvm/compiler/graph/Graph;
    flags: (0x1012) ACC_PRIVATE, ACC_FINAL, ACC_SYNTHETIC

  void <init>(org.graalvm.collections.EconomicMap, org.graalvm.compiler.graph.Graph$DuplicationReplacement, org.graalvm.compiler.graph.Graph);
    descriptor: (Lorg/graalvm/collections/EconomicMap;Lorg/graalvm/compiler/graph/Graph$DuplicationReplacement;Lorg/graalvm/compiler/graph/Graph;)V
    flags: (0x0000) 
    Code:
      stack=2, locals=4, args_size=4
        start local 0 // org.graalvm.compiler.graph.NodeClass$1 this
         0: .line 872
            aload 0 /* this */
            aload 1
            putfield org.graalvm.compiler.graph.NodeClass$1.val$newNodes:Lorg/graalvm/collections/EconomicMap;
            aload 0 /* this */
            aload 2
            putfield org.graalvm.compiler.graph.NodeClass$1.val$replacements:Lorg/graalvm/compiler/graph/Graph$DuplicationReplacement;
            aload 0 /* this */
            aload 3
            putfield org.graalvm.compiler.graph.NodeClass$1.val$graph:Lorg/graalvm/compiler/graph/Graph;
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // org.graalvm.compiler.graph.NodeClass$1 this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/graalvm/compiler/graph/NodeClass$1;
    MethodParameters:
                  Name  Flags
      val$newNodes      final
      val$replacements  final
      val$graph         final

  public org.graalvm.compiler.graph.Node replacement(org.graalvm.compiler.graph.Node, org.graalvm.compiler.graph.Edges$Type);
    descriptor: (Lorg/graalvm/compiler/graph/Node;Lorg/graalvm/compiler/graph/Edges$Type;)Lorg/graalvm/compiler/graph/Node;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=5, args_size=3
        start local 0 // org.graalvm.compiler.graph.NodeClass$1 this
        start local 1 // org.graalvm.compiler.graph.Node node
        start local 2 // org.graalvm.compiler.graph.Edges$Type type
         0: .line 876
            aload 0 /* this */
            getfield org.graalvm.compiler.graph.NodeClass$1.val$newNodes:Lorg/graalvm/collections/EconomicMap;
            aload 1 /* node */
            invokeinterface org.graalvm.collections.EconomicMap.get:(Ljava/lang/Object;)Ljava/lang/Object;
            checkcast org.graalvm.compiler.graph.Node
            astore 3 /* target */
        start local 3 // org.graalvm.compiler.graph.Node target
         1: .line 877
            aload 3 /* target */
            ifnonnull 10
         2: .line 878
            aload 1 /* node */
            astore 4 /* replacement */
        start local 4 // org.graalvm.compiler.graph.Node replacement
         3: .line 879
            aload 0 /* this */
            getfield org.graalvm.compiler.graph.NodeClass$1.val$replacements:Lorg/graalvm/compiler/graph/Graph$DuplicationReplacement;
            ifnull 5
         4: .line 880
            aload 0 /* this */
            getfield org.graalvm.compiler.graph.NodeClass$1.val$replacements:Lorg/graalvm/compiler/graph/Graph$DuplicationReplacement;
            aload 1 /* node */
            invokeinterface org.graalvm.compiler.graph.Graph$DuplicationReplacement.replacement:(Lorg/graalvm/compiler/graph/Node;)Lorg/graalvm/compiler/graph/Node;
            astore 4 /* replacement */
         5: .line 882
      StackMap locals: org.graalvm.compiler.graph.Node org.graalvm.compiler.graph.Node
      StackMap stack:
            aload 4 /* replacement */
            aload 1 /* node */
            if_acmpeq 8
         6: .line 883
            aload 4 /* replacement */
            astore 3 /* target */
         7: .line 884
            goto 10
      StackMap locals:
      StackMap stack:
         8: aload 1 /* node */
            invokevirtual org.graalvm.compiler.graph.Node.graph:()Lorg/graalvm/compiler/graph/Graph;
            aload 0 /* this */
            getfield org.graalvm.compiler.graph.NodeClass$1.val$graph:Lorg/graalvm/compiler/graph/Graph;
            if_acmpne 10
            aload 2 /* type */
            getstatic org.graalvm.compiler.graph.Edges$Type.Inputs:Lorg/graalvm/compiler/graph/Edges$Type;
            if_acmpne 10
         9: .line 886
            aload 1 /* node */
            astore 3 /* target */
        end local 4 // org.graalvm.compiler.graph.Node replacement
        10: .line 890
      StackMap locals:
      StackMap stack:
            aload 3 /* target */
            areturn
        end local 3 // org.graalvm.compiler.graph.Node target
        end local 2 // org.graalvm.compiler.graph.Edges$Type type
        end local 1 // org.graalvm.compiler.graph.Node node
        end local 0 // org.graalvm.compiler.graph.NodeClass$1 this
      LocalVariableTable:
        Start  End  Slot         Name  Signature
            0   11     0         this  Lorg/graalvm/compiler/graph/NodeClass$1;
            0   11     1         node  Lorg/graalvm/compiler/graph/Node;
            0   11     2         type  Lorg/graalvm/compiler/graph/Edges$Type;
            1   11     3       target  Lorg/graalvm/compiler/graph/Node;
            3   10     4  replacement  Lorg/graalvm/compiler/graph/Node;
    MethodParameters:
      Name  Flags
      node  
      type  
}
SourceFile: "NodeClass.java"
EnclosingMethod: org.graalvm.compiler.graph.NodeClass.addGraphDuplicate:(Lorg/graalvm/compiler/graph/Graph;Lorg/graalvm/compiler/graph/Graph;ILjava/lang/Iterable;Lorg/graalvm/compiler/graph/Graph$DuplicationReplacement;)Lorg/graalvm/collections/EconomicMap;
NestHost: org.graalvm.compiler.graph.NodeClass
InnerClasses:
  public final Type = org.graalvm.compiler.graph.Edges$Type of org.graalvm.compiler.graph.Edges
  public abstract DuplicationReplacement = org.graalvm.compiler.graph.Graph$DuplicationReplacement of org.graalvm.compiler.graph.Graph
  org.graalvm.compiler.graph.NodeClass$1
  abstract InplaceUpdateClosure = org.graalvm.compiler.graph.NodeClass$InplaceUpdateClosure of org.graalvm.compiler.graph.NodeClass