https://www.graalvm.org/ 
final class com.oracle.truffle.api.nodes.BlockNodeSnippets$LanguageBlockNode extends com.oracle.truffle.api.nodes.BlockNodeSnippets$LanguageNode implements com.oracle.truffle.api.nodes.BlockNode$ElementExecutor<com.oracle.truffle.api.nodes.BlockNodeSnippets$LanguageNode>
  minor version: 0
  major version: 59
  flags: flags: (0x0030) ACC_FINAL, ACC_SUPER
  this_class: com.oracle.truffle.api.nodes.BlockNodeSnippets$LanguageBlockNode
  super_class: com.oracle.truffle.api.nodes.BlockNodeSnippets$LanguageNode
{
  private com.oracle.truffle.api.nodes.BlockNode<com.oracle.truffle.api.nodes.BlockNodeSnippets$LanguageNode> block;
    descriptor: Lcom/oracle/truffle/api/nodes/BlockNode;
    flags: (0x0002) ACC_PRIVATE
    Signature: Lcom/oracle/truffle/api/nodes/BlockNode<Lcom/oracle/truffle/api/nodes/BlockNodeSnippets$LanguageNode;>;
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.nodes.Node$Child()

  final com.oracle.truffle.api.nodes.BlockNodeSnippets this$0;
    descriptor: Lcom/oracle/truffle/api/nodes/BlockNodeSnippets;
    flags: (0x1010) ACC_FINAL, ACC_SYNTHETIC

  void <init>(com.oracle.truffle.api.nodes.BlockNodeSnippets, com.oracle.truffle.api.nodes.BlockNodeSnippets$LanguageNode[]);
    descriptor: (Lcom/oracle/truffle/api/nodes/BlockNodeSnippets;[Lcom/oracle/truffle/api/nodes/BlockNodeSnippets$LanguageNode;)V
    flags: (0x0000) 
    Code:
      stack=3, locals=3, args_size=3
        start local 0 // com.oracle.truffle.api.nodes.BlockNodeSnippets$LanguageBlockNode this
        start local 2 // com.oracle.truffle.api.nodes.BlockNodeSnippets$LanguageNode[] elements
         0: .line 450
            aload 0 /* this */
            aload 1
            putfield com.oracle.truffle.api.nodes.BlockNodeSnippets$LanguageBlockNode.this$0:Lcom/oracle/truffle/api/nodes/BlockNodeSnippets;
            aload 0 /* this */
            aload 1
            invokespecial com.oracle.truffle.api.nodes.BlockNodeSnippets$LanguageNode.<init>:(Lcom/oracle/truffle/api/nodes/BlockNodeSnippets;)V
         1: .line 451
            aload 0 /* this */
            aload 2 /* elements */
            aload 0 /* this */
            invokestatic com.oracle.truffle.api.nodes.BlockNode.create:([Lcom/oracle/truffle/api/nodes/Node;Lcom/oracle/truffle/api/nodes/BlockNode$ElementExecutor;)Lcom/oracle/truffle/api/nodes/BlockNode;
            putfield com.oracle.truffle.api.nodes.BlockNodeSnippets$LanguageBlockNode.block:Lcom/oracle/truffle/api/nodes/BlockNode;
         2: .line 452
            return
        end local 2 // com.oracle.truffle.api.nodes.BlockNodeSnippets$LanguageNode[] elements
        end local 0 // com.oracle.truffle.api.nodes.BlockNodeSnippets$LanguageBlockNode this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    3     0      this  Lcom/oracle/truffle/api/nodes/BlockNodeSnippets$LanguageBlockNode;
            0    3     2  elements  [Lcom/oracle/truffle/api/nodes/BlockNodeSnippets$LanguageNode;
    MethodParameters:
          Name  Flags
      this$0    final
      elements  

  public void executeVoid(com.oracle.truffle.api.frame.VirtualFrame, com.oracle.truffle.api.nodes.BlockNodeSnippets$LanguageNode, int, int);
    descriptor: (Lcom/oracle/truffle/api/frame/VirtualFrame;Lcom/oracle/truffle/api/nodes/BlockNodeSnippets$LanguageNode;II)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=5, args_size=5
        start local 0 // com.oracle.truffle.api.nodes.BlockNodeSnippets$LanguageBlockNode this
        start local 1 // com.oracle.truffle.api.frame.VirtualFrame frame
        start local 2 // com.oracle.truffle.api.nodes.BlockNodeSnippets$LanguageNode node
        start local 3 // int index
        start local 4 // int arg
         0: .line 457
            aload 2 /* node */
            aload 1 /* frame */
            invokevirtual com.oracle.truffle.api.nodes.BlockNodeSnippets$LanguageNode.execute:(Lcom/oracle/truffle/api/frame/VirtualFrame;)Ljava/lang/Object;
            pop
         1: .line 458
            return
        end local 4 // int arg
        end local 3 // int index
        end local 2 // com.oracle.truffle.api.nodes.BlockNodeSnippets$LanguageNode node
        end local 1 // com.oracle.truffle.api.frame.VirtualFrame frame
        end local 0 // com.oracle.truffle.api.nodes.BlockNodeSnippets$LanguageBlockNode this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    2     0   this  Lcom/oracle/truffle/api/nodes/BlockNodeSnippets$LanguageBlockNode;
            0    2     1  frame  Lcom/oracle/truffle/api/frame/VirtualFrame;
            0    2     2   node  Lcom/oracle/truffle/api/nodes/BlockNodeSnippets$LanguageNode;
            0    2     3  index  I
            0    2     4    arg  I
    MethodParameters:
       Name  Flags
      frame  
      node   
      index  
      arg    

  public java.lang.Object executeGeneric(com.oracle.truffle.api.frame.VirtualFrame, com.oracle.truffle.api.nodes.BlockNodeSnippets$LanguageNode, int, int);
    descriptor: (Lcom/oracle/truffle/api/frame/VirtualFrame;Lcom/oracle/truffle/api/nodes/BlockNodeSnippets$LanguageNode;II)Ljava/lang/Object;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=5, args_size=5
        start local 0 // com.oracle.truffle.api.nodes.BlockNodeSnippets$LanguageBlockNode this
        start local 1 // com.oracle.truffle.api.frame.VirtualFrame frame
        start local 2 // com.oracle.truffle.api.nodes.BlockNodeSnippets$LanguageNode node
        start local 3 // int index
        start local 4 // int arg
         0: .line 463
            aload 2 /* node */
            aload 1 /* frame */
            invokevirtual com.oracle.truffle.api.nodes.BlockNodeSnippets$LanguageNode.execute:(Lcom/oracle/truffle/api/frame/VirtualFrame;)Ljava/lang/Object;
            areturn
        end local 4 // int arg
        end local 3 // int index
        end local 2 // com.oracle.truffle.api.nodes.BlockNodeSnippets$LanguageNode node
        end local 1 // com.oracle.truffle.api.frame.VirtualFrame frame
        end local 0 // com.oracle.truffle.api.nodes.BlockNodeSnippets$LanguageBlockNode this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    1     0   this  Lcom/oracle/truffle/api/nodes/BlockNodeSnippets$LanguageBlockNode;
            0    1     1  frame  Lcom/oracle/truffle/api/frame/VirtualFrame;
            0    1     2   node  Lcom/oracle/truffle/api/nodes/BlockNodeSnippets$LanguageNode;
            0    1     3  index  I
            0    1     4    arg  I
    MethodParameters:
       Name  Flags
      frame  
      node   
      index  
      arg    

  public java.lang.Object execute(com.oracle.truffle.api.frame.VirtualFrame);
    descriptor: (Lcom/oracle/truffle/api/frame/VirtualFrame;)Ljava/lang/Object;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=2, args_size=2
        start local 0 // com.oracle.truffle.api.nodes.BlockNodeSnippets$LanguageBlockNode this
        start local 1 // com.oracle.truffle.api.frame.VirtualFrame frame
         0: .line 468
            aload 0 /* this */
            getfield com.oracle.truffle.api.nodes.BlockNodeSnippets$LanguageBlockNode.block:Lcom/oracle/truffle/api/nodes/BlockNode;
            aload 1 /* frame */
            iconst_0
            invokevirtual com.oracle.truffle.api.nodes.BlockNode.executeGeneric:(Lcom/oracle/truffle/api/frame/VirtualFrame;I)Ljava/lang/Object;
            areturn
        end local 1 // com.oracle.truffle.api.frame.VirtualFrame frame
        end local 0 // com.oracle.truffle.api.nodes.BlockNodeSnippets$LanguageBlockNode this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    1     0   this  Lcom/oracle/truffle/api/nodes/BlockNodeSnippets$LanguageBlockNode;
            0    1     1  frame  Lcom/oracle/truffle/api/frame/VirtualFrame;
    MethodParameters:
       Name  Flags
      frame  

  public void executeVoid(com.oracle.truffle.api.frame.VirtualFrame, com.oracle.truffle.api.nodes.Node, int, int);
    descriptor: (Lcom/oracle/truffle/api/frame/VirtualFrame;Lcom/oracle/truffle/api/nodes/Node;II)V
    flags: (0x1041) ACC_PUBLIC, ACC_BRIDGE, ACC_SYNTHETIC
    Code:
      stack=5, locals=5, args_size=5
         0: .line 1
            aload 0
            aload 1
            aload 2
            checkcast com.oracle.truffle.api.nodes.BlockNodeSnippets$LanguageNode
            iload 3
            iload 4
            invokevirtual com.oracle.truffle.api.nodes.BlockNodeSnippets$LanguageBlockNode.executeVoid:(Lcom/oracle/truffle/api/frame/VirtualFrame;Lcom/oracle/truffle/api/nodes/BlockNodeSnippets$LanguageNode;II)V
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  public java.lang.Object executeGeneric(com.oracle.truffle.api.frame.VirtualFrame, com.oracle.truffle.api.nodes.Node, int, int);
    descriptor: (Lcom/oracle/truffle/api/frame/VirtualFrame;Lcom/oracle/truffle/api/nodes/Node;II)Ljava/lang/Object;
    flags: (0x1041) ACC_PUBLIC, ACC_BRIDGE, ACC_SYNTHETIC
    Code:
      stack=5, locals=5, args_size=5
         0: .line 1
            aload 0
            aload 1
            aload 2
            checkcast com.oracle.truffle.api.nodes.BlockNodeSnippets$LanguageNode
            iload 3
            iload 4
            invokevirtual com.oracle.truffle.api.nodes.BlockNodeSnippets$LanguageBlockNode.executeGeneric:(Lcom/oracle/truffle/api/frame/VirtualFrame;Lcom/oracle/truffle/api/nodes/BlockNodeSnippets$LanguageNode;II)Ljava/lang/Object;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature
}
Signature: Lcom/oracle/truffle/api/nodes/BlockNodeSnippets$LanguageNode;Lcom/oracle/truffle/api/nodes/BlockNode$ElementExecutor<Lcom/oracle/truffle/api/nodes/BlockNodeSnippets$LanguageNode;>;
SourceFile: "BlockNode.java"
NestHost: com.oracle.truffle.api.nodes.BlockNodeSnippets
InnerClasses:
  public abstract ElementExecutor = com.oracle.truffle.api.nodes.BlockNode$ElementExecutor of com.oracle.truffle.api.nodes.BlockNode
  final LanguageBlockNode = com.oracle.truffle.api.nodes.BlockNodeSnippets$LanguageBlockNode of com.oracle.truffle.api.nodes.BlockNodeSnippets
  abstract LanguageNode = com.oracle.truffle.api.nodes.BlockNodeSnippets$LanguageNode of com.oracle.truffle.api.nodes.BlockNodeSnippets
  public abstract Child = com.oracle.truffle.api.nodes.Node$Child of com.oracle.truffle.api.nodes.Node