public final class org.apache.lucene.util.SetOnce<T> implements java.lang.Cloneable
  minor version: 0
  major version: 59
  flags: flags: (0x0031) ACC_PUBLIC, ACC_FINAL, ACC_SUPER
  this_class: org.apache.lucene.util.SetOnce
  super_class: java.lang.Object
{
  private final java.util.concurrent.atomic.AtomicReference<org.apache.lucene.util.SetOnce$Wrapper<T>> set;
    descriptor: Ljava/util/concurrent/atomic/AtomicReference;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL
    Signature: Ljava/util/concurrent/atomic/AtomicReference<Lorg/apache/lucene/util/SetOnce$Wrapper<TT;>;>;

  public void <init>();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // org.apache.lucene.util.SetOnce this
         0: .line 55
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 56
            aload 0 /* this */
            new java.util.concurrent.atomic.AtomicReference
            dup
            invokespecial java.util.concurrent.atomic.AtomicReference.<init>:()V
            putfield org.apache.lucene.util.SetOnce.set:Ljava/util/concurrent/atomic/AtomicReference;
         2: .line 57
            return
        end local 0 // org.apache.lucene.util.SetOnce this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lorg/apache/lucene/util/SetOnce<TT;>;

  public void <init>();
    descriptor: (Ljava/lang/Object;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=6, locals=2, args_size=2
        start local 0 // org.apache.lucene.util.SetOnce this
        start local 1 // java.lang.Object obj
         0: .line 67
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 68
            aload 0 /* this */
            new java.util.concurrent.atomic.AtomicReference
            dup
            new org.apache.lucene.util.SetOnce$Wrapper
            dup
            aload 1 /* obj */
            invokespecial org.apache.lucene.util.SetOnce$Wrapper.<init>:(Ljava/lang/Object;)V
            invokespecial java.util.concurrent.atomic.AtomicReference.<init>:(Ljava/lang/Object;)V
            putfield org.apache.lucene.util.SetOnce.set:Ljava/util/concurrent/atomic/AtomicReference;
         2: .line 69
            return
        end local 1 // java.lang.Object obj
        end local 0 // org.apache.lucene.util.SetOnce this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lorg/apache/lucene/util/SetOnce<TT;>;
            0    3     1   obj  TT;
    Signature: (TT;)V
    MethodParameters:
      Name  Flags
      obj   

  public final void set();
    descriptor: (Ljava/lang/Object;)V
    flags: (0x0011) ACC_PUBLIC, ACC_FINAL
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.apache.lucene.util.SetOnce this
        start local 1 // java.lang.Object obj
         0: .line 73
            aload 0 /* this */
            aload 1 /* obj */
            invokevirtual org.apache.lucene.util.SetOnce.trySet:(Ljava/lang/Object;)Z
            ifne 2
         1: .line 74
            new org.apache.lucene.util.SetOnce$AlreadySetException
            dup
            invokespecial org.apache.lucene.util.SetOnce$AlreadySetException.<init>:()V
            athrow
         2: .line 76
      StackMap locals:
      StackMap stack:
            return
        end local 1 // java.lang.Object obj
        end local 0 // org.apache.lucene.util.SetOnce this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lorg/apache/lucene/util/SetOnce<TT;>;
            0    3     1   obj  TT;
    Signature: (TT;)V
    MethodParameters:
      Name  Flags
      obj   

  public final boolean trySet();
    descriptor: (Ljava/lang/Object;)Z
    flags: (0x0011) ACC_PUBLIC, ACC_FINAL
    Code:
      stack=5, locals=2, args_size=2
        start local 0 // org.apache.lucene.util.SetOnce this
        start local 1 // java.lang.Object obj
         0: .line 83
            aload 0 /* this */
            getfield org.apache.lucene.util.SetOnce.set:Ljava/util/concurrent/atomic/AtomicReference;
            aconst_null
            new org.apache.lucene.util.SetOnce$Wrapper
            dup
            aload 1 /* obj */
            invokespecial org.apache.lucene.util.SetOnce$Wrapper.<init>:(Ljava/lang/Object;)V
            invokevirtual java.util.concurrent.atomic.AtomicReference.compareAndSet:(Ljava/lang/Object;Ljava/lang/Object;)Z
            ireturn
        end local 1 // java.lang.Object obj
        end local 0 // org.apache.lucene.util.SetOnce this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/apache/lucene/util/SetOnce<TT;>;
            0    1     1   obj  TT;
    Signature: (TT;)Z
    MethodParameters:
      Name  Flags
      obj   

  public final T get();
    descriptor: ()Ljava/lang/Object;
    flags: (0x0011) ACC_PUBLIC, ACC_FINAL
    Code:
      stack=1, locals=2, args_size=1
        start local 0 // org.apache.lucene.util.SetOnce this
         0: .line 88
            aload 0 /* this */
            getfield org.apache.lucene.util.SetOnce.set:Ljava/util/concurrent/atomic/AtomicReference;
            invokevirtual java.util.concurrent.atomic.AtomicReference.get:()Ljava/lang/Object;
            checkcast org.apache.lucene.util.SetOnce$Wrapper
            astore 1 /* wrapper */
        start local 1 // org.apache.lucene.util.SetOnce$Wrapper wrapper
         1: .line 89
            aload 1 /* wrapper */
            ifnonnull 2
            aconst_null
            goto 3
      StackMap locals: org.apache.lucene.util.SetOnce$Wrapper
      StackMap stack:
         2: aload 1 /* wrapper */
            getfield org.apache.lucene.util.SetOnce$Wrapper.object:Ljava/lang/Object;
      StackMap locals:
      StackMap stack: java.lang.Object
         3: areturn
        end local 1 // org.apache.lucene.util.SetOnce$Wrapper wrapper
        end local 0 // org.apache.lucene.util.SetOnce this
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    4     0     this  Lorg/apache/lucene/util/SetOnce<TT;>;
            1    4     1  wrapper  Lorg/apache/lucene/util/SetOnce$Wrapper<TT;>;
    Signature: ()TT;
}
Signature: <T:Ljava/lang/Object;>Ljava/lang/Object;Ljava/lang/Cloneable;
SourceFile: "SetOnce.java"
NestMembers:
  org.apache.lucene.util.SetOnce$AlreadySetException  org.apache.lucene.util.SetOnce$Wrapper
InnerClasses:
  public final AlreadySetException = org.apache.lucene.util.SetOnce$AlreadySetException of org.apache.lucene.util.SetOnce
  private final Wrapper = org.apache.lucene.util.SetOnce$Wrapper of org.apache.lucene.util.SetOnce