https://www.graalvm.org/ 
class org.graalvm.compiler.graph.NodeClass$2 implements org.graalvm.compiler.graph.iterators.NodeIterable<org.graalvm.compiler.graph.Node>
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: org.graalvm.compiler.graph.NodeClass$2
  super_class: java.lang.Object
{
  final org.graalvm.compiler.graph.NodeClass this$0;
    descriptor: Lorg/graalvm/compiler/graph/NodeClass;
    flags: (0x1010) ACC_FINAL, ACC_SYNTHETIC

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

  private final long val$mask;
    descriptor: J
    flags: (0x1012) ACC_PRIVATE, ACC_FINAL, ACC_SYNTHETIC

  void <init>(org.graalvm.compiler.graph.NodeClass, org.graalvm.compiler.graph.Node, long);
    descriptor: (Lorg/graalvm/compiler/graph/NodeClass;Lorg/graalvm/compiler/graph/Node;J)V
    flags: (0x0000) 
    Code:
      stack=3, locals=5, args_size=4
        start local 0 // org.graalvm.compiler.graph.NodeClass$2 this
         0: .line 1128
            aload 0 /* this */
            aload 1
            putfield org.graalvm.compiler.graph.NodeClass$2.this$0:Lorg/graalvm/compiler/graph/NodeClass;
            aload 0 /* this */
            aload 2
            putfield org.graalvm.compiler.graph.NodeClass$2.val$node:Lorg/graalvm/compiler/graph/Node;
            aload 0 /* this */
            lload 3
            putfield org.graalvm.compiler.graph.NodeClass$2.val$mask:J
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // org.graalvm.compiler.graph.NodeClass$2 this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/graalvm/compiler/graph/NodeClass$2;
    MethodParameters:
          Name  Flags
      this$0    final
      val$node  final
      val$mask  final

  public java.util.Iterator<org.graalvm.compiler.graph.Node> iterator();
    descriptor: ()Ljava/util/Iterator;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=5, locals=1, args_size=1
        start local 0 // org.graalvm.compiler.graph.NodeClass$2 this
         0: .line 1132
            invokestatic org.graalvm.compiler.graph.Graph.isModificationCountsEnabled:()Z
            ifeq 2
         1: .line 1133
            new org.graalvm.compiler.graph.NodeClass$RawEdgesWithModCountIterator
            dup
            aload 0 /* this */
            getfield org.graalvm.compiler.graph.NodeClass$2.val$node:Lorg/graalvm/compiler/graph/Node;
            aload 0 /* this */
            getfield org.graalvm.compiler.graph.NodeClass$2.val$mask:J
            invokespecial org.graalvm.compiler.graph.NodeClass$RawEdgesWithModCountIterator.<init>:(Lorg/graalvm/compiler/graph/Node;J)V
            areturn
         2: .line 1135
      StackMap locals:
      StackMap stack:
            new org.graalvm.compiler.graph.NodeClass$RawEdgesIterator
            dup
            aload 0 /* this */
            getfield org.graalvm.compiler.graph.NodeClass$2.val$node:Lorg/graalvm/compiler/graph/Node;
            aload 0 /* this */
            getfield org.graalvm.compiler.graph.NodeClass$2.val$mask:J
            invokespecial org.graalvm.compiler.graph.NodeClass$RawEdgesIterator.<init>:(Lorg/graalvm/compiler/graph/Node;J)V
            areturn
        end local 0 // org.graalvm.compiler.graph.NodeClass$2 this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lorg/graalvm/compiler/graph/NodeClass$2;
    Signature: ()Ljava/util/Iterator<Lorg/graalvm/compiler/graph/Node;>;

  public java.lang.String toString();
    descriptor: ()Ljava/lang/String;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=5, args_size=1
        start local 0 // org.graalvm.compiler.graph.NodeClass$2 this
         0: .line 1141
            new java.lang.StringBuilder
            dup
            invokespecial java.lang.StringBuilder.<init>:()V
            astore 1 /* sb */
        start local 1 // java.lang.StringBuilder sb
         1: .line 1142
            aload 0 /* this */
            invokevirtual org.graalvm.compiler.graph.NodeClass$2.iterator:()Ljava/util/Iterator;
            astore 2 /* iterator */
        start local 2 // java.util.Iterator iterator
         2: .line 1143
            iconst_1
            istore 3 /* first */
        start local 3 // boolean first
         3: .line 1144
            aload 1 /* sb */
            ldc "succs="
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            pop
         4: .line 1145
            aload 1 /* sb */
            bipush 91
            invokevirtual java.lang.StringBuilder.append:(C)Ljava/lang/StringBuilder;
            pop
         5: .line 1146
            goto 11
         6: .line 1147
      StackMap locals: java.lang.StringBuilder java.util.Iterator int
      StackMap stack:
            aload 2 /* iterator */
            invokeinterface java.util.Iterator.next:()Ljava/lang/Object;
            checkcast org.graalvm.compiler.graph.Node
            astore 4 /* input */
        start local 4 // org.graalvm.compiler.graph.Node input
         7: .line 1148
            iload 3 /* first */
            ifne 9
         8: .line 1149
            aload 1 /* sb */
            ldc ", "
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            pop
         9: .line 1151
      StackMap locals: org.graalvm.compiler.graph.Node
      StackMap stack:
            aload 1 /* sb */
            aload 4 /* input */
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/Object;)Ljava/lang/StringBuilder;
            pop
        10: .line 1152
            iconst_0
            istore 3 /* first */
        end local 4 // org.graalvm.compiler.graph.Node input
        11: .line 1146
      StackMap locals:
      StackMap stack:
            aload 2 /* iterator */
            invokeinterface java.util.Iterator.hasNext:()Z
            ifne 6
        12: .line 1154
            aload 1 /* sb */
            bipush 93
            invokevirtual java.lang.StringBuilder.append:(C)Ljava/lang/StringBuilder;
            pop
        13: .line 1155
            aload 1 /* sb */
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            areturn
        end local 3 // boolean first
        end local 2 // java.util.Iterator iterator
        end local 1 // java.lang.StringBuilder sb
        end local 0 // org.graalvm.compiler.graph.NodeClass$2 this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0   14     0      this  Lorg/graalvm/compiler/graph/NodeClass$2;
            1   14     1        sb  Ljava/lang/StringBuilder;
            2   14     2  iterator  Ljava/util/Iterator<Lorg/graalvm/compiler/graph/Node;>;
            3   14     3     first  Z
            7   11     4     input  Lorg/graalvm/compiler/graph/Node;
}
Signature: Ljava/lang/Object;Lorg/graalvm/compiler/graph/iterators/NodeIterable<Lorg/graalvm/compiler/graph/Node;>;
SourceFile: "NodeClass.java"
EnclosingMethod: org.graalvm.compiler.graph.NodeClass.getSuccessorIterable:(Lorg/graalvm/compiler/graph/Node;)Lorg/graalvm/compiler/graph/iterators/NodeIterable;
NestHost: org.graalvm.compiler.graph.NodeClass
InnerClasses:
  org.graalvm.compiler.graph.NodeClass$2
  private RawEdgesIterator = org.graalvm.compiler.graph.NodeClass$RawEdgesIterator of org.graalvm.compiler.graph.NodeClass
  private final RawEdgesWithModCountIterator = org.graalvm.compiler.graph.NodeClass$RawEdgesWithModCountIterator of org.graalvm.compiler.graph.NodeClass