https://www.graalvm.org/ 
public abstract class org.graalvm.compiler.nodes.FixedNode extends org.graalvm.compiler.nodes.ValueNode implements org.graalvm.compiler.nodes.FixedNodeInterface
  minor version: 0
  major version: 59
  flags: flags: (0x0421) ACC_PUBLIC, ACC_SUPER, ACC_ABSTRACT
  this_class: org.graalvm.compiler.nodes.FixedNode
  super_class: org.graalvm.compiler.nodes.ValueNode
{
  public static final org.graalvm.compiler.graph.NodeClass<org.graalvm.compiler.nodes.FixedNode> TYPE;
    descriptor: Lorg/graalvm/compiler/graph/NodeClass;
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    Signature: Lorg/graalvm/compiler/graph/NodeClass<Lorg/graalvm/compiler/nodes/FixedNode;>;

  static void <clinit>();
    descriptor: ()V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=1, locals=0, args_size=0
         0: .line 33
            ldc Lorg/graalvm/compiler/nodes/FixedNode;
            invokestatic org.graalvm.compiler.graph.NodeClass.create:(Ljava/lang/Class;)Lorg/graalvm/compiler/graph/NodeClass;
            putstatic org.graalvm.compiler.nodes.FixedNode.TYPE:Lorg/graalvm/compiler/graph/NodeClass;
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  protected void <init>(org.graalvm.compiler.graph.NodeClass<? extends org.graalvm.compiler.nodes.FixedNode>, org.graalvm.compiler.core.common.type.Stamp);
    descriptor: (Lorg/graalvm/compiler/graph/NodeClass;Lorg/graalvm/compiler/core/common/type/Stamp;)V
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=3, locals=3, args_size=3
        start local 0 // org.graalvm.compiler.nodes.FixedNode this
        start local 1 // org.graalvm.compiler.graph.NodeClass c
        start local 2 // org.graalvm.compiler.core.common.type.Stamp stamp
         0: .line 36
            aload 0 /* this */
            aload 1 /* c */
            aload 2 /* stamp */
            invokespecial org.graalvm.compiler.nodes.ValueNode.<init>:(Lorg/graalvm/compiler/graph/NodeClass;Lorg/graalvm/compiler/core/common/type/Stamp;)V
         1: .line 37
            return
        end local 2 // org.graalvm.compiler.core.common.type.Stamp stamp
        end local 1 // org.graalvm.compiler.graph.NodeClass c
        end local 0 // org.graalvm.compiler.nodes.FixedNode this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    2     0   this  Lorg/graalvm/compiler/nodes/FixedNode;
            0    2     1      c  Lorg/graalvm/compiler/graph/NodeClass<+Lorg/graalvm/compiler/nodes/FixedNode;>;
            0    2     2  stamp  Lorg/graalvm/compiler/core/common/type/Stamp;
    Signature: (Lorg/graalvm/compiler/graph/NodeClass<+Lorg/graalvm/compiler/nodes/FixedNode;>;Lorg/graalvm/compiler/core/common/type/Stamp;)V
    MethodParameters:
       Name  Flags
      c      
      stamp  

  public boolean verify();
    descriptor: ()Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=7, locals=1, args_size=1
        start local 0 // org.graalvm.compiler.nodes.FixedNode this
         0: .line 41
            aload 0 /* this */
            aload 0 /* this */
            invokevirtual org.graalvm.compiler.nodes.FixedNode.successors:()Lorg/graalvm/compiler/graph/iterators/NodeIterable;
            invokeinterface org.graalvm.compiler.graph.iterators.NodeIterable.isNotEmpty:()Z
            ifne 1
            aload 0 /* this */
            invokevirtual org.graalvm.compiler.nodes.FixedNode.predecessor:()Lorg/graalvm/compiler/graph/Node;
            ifnonnull 1
            iconst_0
            goto 2
      StackMap locals:
      StackMap stack: org.graalvm.compiler.nodes.FixedNode
         1: iconst_1
      StackMap locals: org.graalvm.compiler.nodes.FixedNode
      StackMap stack: org.graalvm.compiler.nodes.FixedNode int
         2: ldc "FixedNode should not float: %s"
            iconst_1
            anewarray java.lang.Object
            dup
            iconst_0
            aload 0 /* this */
            aastore
            invokevirtual org.graalvm.compiler.nodes.FixedNode.assertTrue:(ZLjava/lang/String;[Ljava/lang/Object;)Z
            pop
         3: .line 42
            aload 0 /* this */
            invokespecial org.graalvm.compiler.nodes.ValueNode.verify:()Z
            ireturn
        end local 0 // org.graalvm.compiler.nodes.FixedNode this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    4     0  this  Lorg/graalvm/compiler/nodes/FixedNode;

  public org.graalvm.compiler.nodes.FixedNode asNode();
    descriptor: ()Lorg/graalvm/compiler/nodes/FixedNode;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.graalvm.compiler.nodes.FixedNode this
         0: .line 47
            aload 0 /* this */
            areturn
        end local 0 // org.graalvm.compiler.nodes.FixedNode this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/graalvm/compiler/nodes/FixedNode;

  public org.graalvm.compiler.nodes.ValueNode asNode();
    descriptor: ()Lorg/graalvm/compiler/nodes/ValueNode;
    flags: (0x1041) ACC_PUBLIC, ACC_BRIDGE, ACC_SYNTHETIC
    Code:
      stack=1, locals=1, args_size=1
         0: .line 1
            aload 0
            invokevirtual org.graalvm.compiler.nodes.FixedNode.asNode:()Lorg/graalvm/compiler/nodes/FixedNode;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  public org.graalvm.compiler.graph.Node asNode();
    descriptor: ()Lorg/graalvm/compiler/graph/Node;
    flags: (0x1041) ACC_PUBLIC, ACC_BRIDGE, ACC_SYNTHETIC
    Code:
      stack=1, locals=1, args_size=1
         0: .line 1
            aload 0
            invokevirtual org.graalvm.compiler.nodes.FixedNode.asNode:()Lorg/graalvm/compiler/nodes/FixedNode;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature
}
SourceFile: "FixedNode.java"
    RuntimeVisibleAnnotations: 
      org.graalvm.compiler.nodeinfo.NodeInfo()