http://netty.io/netty-all/: Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers and clients. (The Netty Project) 
public class io.netty.util.concurrent.PromiseNotifier<V, F extends io.netty.util.concurrent.Future<V>> implements io.netty.util.concurrent.GenericFutureListener<F>
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: io.netty.util.concurrent.PromiseNotifier
  super_class: java.lang.Object
{
  private static final io.netty.util.internal.logging.InternalLogger logger;
    descriptor: Lio/netty/util/internal/logging/InternalLogger;
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL

  private final io.netty.util.concurrent.Promise<? super V>[] promises;
    descriptor: [Lio/netty/util/concurrent/Promise;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL
    Signature: [Lio/netty/util/concurrent/Promise<-TV;>;

  private final boolean logNotifyFailure;
    descriptor: Z
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  static void <clinit>();
    descriptor: ()V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=1, locals=0, args_size=0
         0: .line 33
            ldc Lio/netty/util/concurrent/PromiseNotifier;
            invokestatic io.netty.util.internal.logging.InternalLoggerFactory.getInstance:(Ljava/lang/Class;)Lio/netty/util/internal/logging/InternalLogger;
            putstatic io.netty.util.concurrent.PromiseNotifier.logger:Lio/netty/util/internal/logging/InternalLogger;
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  public void <init>(io.netty.util.concurrent.Promise<? super V>[]);
    descriptor: ([Lio/netty/util/concurrent/Promise;)V
    flags: (0x0081) ACC_PUBLIC, ACC_VARARGS
    Code:
      stack=3, locals=2, args_size=2
        start local 0 // io.netty.util.concurrent.PromiseNotifier this
        start local 1 // io.netty.util.concurrent.Promise[] promises
         0: .line 44
            aload 0 /* this */
            iconst_1
            aload 1 /* promises */
            invokespecial io.netty.util.concurrent.PromiseNotifier.<init>:(Z[Lio/netty/util/concurrent/Promise;)V
         1: .line 45
            return
        end local 1 // io.netty.util.concurrent.Promise[] promises
        end local 0 // io.netty.util.concurrent.PromiseNotifier this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    2     0      this  Lio/netty/util/concurrent/PromiseNotifier<TV;TF;>;
            0    2     1  promises  [Lio/netty/util/concurrent/Promise;
    Signature: ([Lio/netty/util/concurrent/Promise<-TV;>;)V
    RuntimeVisibleAnnotations: 
      java.lang.SafeVarargs()
    MethodParameters:
          Name  Flags
      promises  

  public void <init>(boolean, io.netty.util.concurrent.Promise<? super V>[]);
    descriptor: (Z[Lio/netty/util/concurrent/Promise;)V
    flags: (0x0081) ACC_PUBLIC, ACC_VARARGS
    Code:
      stack=3, locals=7, args_size=3
        start local 0 // io.netty.util.concurrent.PromiseNotifier this
        start local 1 // boolean logNotifyFailure
        start local 2 // io.netty.util.concurrent.Promise[] promises
         0: .line 54
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 55
            aload 2 /* promises */
            ldc "promises"
            invokestatic io.netty.util.internal.ObjectUtil.checkNotNull:(Ljava/lang/Object;Ljava/lang/String;)Ljava/lang/Object;
            pop
         2: .line 56
            aload 2 /* promises */
            dup
            astore 6
            arraylength
            istore 5
            iconst_0
            istore 4
            goto 7
      StackMap locals: io.netty.util.concurrent.PromiseNotifier int io.netty.util.concurrent.Promise[] top int int io.netty.util.concurrent.Promise[]
      StackMap stack:
         3: aload 6
            iload 4
            aaload
            astore 3 /* promise */
        start local 3 // io.netty.util.concurrent.Promise promise
         4: .line 57
            aload 3 /* promise */
            ifnonnull 6
         5: .line 58
            new java.lang.IllegalArgumentException
            dup
            ldc "promises contains null Promise"
            invokespecial java.lang.IllegalArgumentException.<init>:(Ljava/lang/String;)V
            athrow
        end local 3 // io.netty.util.concurrent.Promise promise
         6: .line 56
      StackMap locals:
      StackMap stack:
            iinc 4 1
      StackMap locals:
      StackMap stack:
         7: iload 4
            iload 5
            if_icmplt 3
         8: .line 61
            aload 0 /* this */
            aload 2 /* promises */
            invokevirtual io.netty.util.concurrent.Promise[].clone:()Ljava/lang/Object;
            checkcast io.netty.util.concurrent.Promise[]
            putfield io.netty.util.concurrent.PromiseNotifier.promises:[Lio/netty/util/concurrent/Promise;
         9: .line 62
            aload 0 /* this */
            iload 1 /* logNotifyFailure */
            putfield io.netty.util.concurrent.PromiseNotifier.logNotifyFailure:Z
        10: .line 63
            return
        end local 2 // io.netty.util.concurrent.Promise[] promises
        end local 1 // boolean logNotifyFailure
        end local 0 // io.netty.util.concurrent.PromiseNotifier this
      LocalVariableTable:
        Start  End  Slot              Name  Signature
            0   11     0              this  Lio/netty/util/concurrent/PromiseNotifier<TV;TF;>;
            0   11     1  logNotifyFailure  Z
            0   11     2          promises  [Lio/netty/util/concurrent/Promise;
            4    6     3           promise  Lio/netty/util/concurrent/Promise<-TV;>;
    Signature: (Z[Lio/netty/util/concurrent/Promise<-TV;>;)V
    RuntimeVisibleAnnotations: 
      java.lang.SafeVarargs()
    MethodParameters:
                  Name  Flags
      logNotifyFailure  
      promises          

  public void operationComplete();
    descriptor: (Lio/netty/util/concurrent/Future;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=8, args_size=2
        start local 0 // io.netty.util.concurrent.PromiseNotifier this
        start local 1 // io.netty.util.concurrent.Future future
         0: .line 67
            aload 0 /* this */
            getfield io.netty.util.concurrent.PromiseNotifier.logNotifyFailure:Z
            ifeq 1
            getstatic io.netty.util.concurrent.PromiseNotifier.logger:Lio/netty/util/internal/logging/InternalLogger;
            goto 2
      StackMap locals:
      StackMap stack:
         1: aconst_null
      StackMap locals:
      StackMap stack: io.netty.util.internal.logging.InternalLogger
         2: astore 2 /* internalLogger */
        start local 2 // io.netty.util.internal.logging.InternalLogger internalLogger
         3: .line 68
            aload 1 /* future */
            invokeinterface io.netty.util.concurrent.Future.isSuccess:()Z
            ifeq 11
         4: .line 69
            aload 1 /* future */
            invokeinterface io.netty.util.concurrent.Future.get:()Ljava/lang/Object;
            astore 3 /* result */
        start local 3 // java.lang.Object result
         5: .line 70
            aload 0 /* this */
            getfield io.netty.util.concurrent.PromiseNotifier.promises:[Lio/netty/util/concurrent/Promise;
            dup
            astore 7
            arraylength
            istore 6
            iconst_0
            istore 5
            goto 9
      StackMap locals: io.netty.util.concurrent.PromiseNotifier io.netty.util.concurrent.Future io.netty.util.internal.logging.InternalLogger java.lang.Object top int int io.netty.util.concurrent.Promise[]
      StackMap stack:
         6: aload 7
            iload 5
            aaload
            astore 4 /* p */
        start local 4 // io.netty.util.concurrent.Promise p
         7: .line 71
            aload 4 /* p */
            aload 3 /* result */
            aload 2 /* internalLogger */
            invokestatic io.netty.util.internal.PromiseNotificationUtil.trySuccess:(Lio/netty/util/concurrent/Promise;Ljava/lang/Object;Lio/netty/util/internal/logging/InternalLogger;)V
        end local 4 // io.netty.util.concurrent.Promise p
         8: .line 70
            iinc 5 1
      StackMap locals:
      StackMap stack:
         9: iload 5
            iload 6
            if_icmplt 6
        end local 3 // java.lang.Object result
        10: .line 73
            goto 24
      StackMap locals: io.netty.util.concurrent.PromiseNotifier io.netty.util.concurrent.Future io.netty.util.internal.logging.InternalLogger
      StackMap stack:
        11: aload 1 /* future */
            invokeinterface io.netty.util.concurrent.Future.isCancelled:()Z
            ifeq 18
        12: .line 74
            aload 0 /* this */
            getfield io.netty.util.concurrent.PromiseNotifier.promises:[Lio/netty/util/concurrent/Promise;
            dup
            astore 6
            arraylength
            istore 5
            iconst_0
            istore 4
            goto 16
      StackMap locals: io.netty.util.concurrent.PromiseNotifier io.netty.util.concurrent.Future io.netty.util.internal.logging.InternalLogger top int int io.netty.util.concurrent.Promise[]
      StackMap stack:
        13: aload 6
            iload 4
            aaload
            astore 3 /* p */
        start local 3 // io.netty.util.concurrent.Promise p
        14: .line 75
            aload 3 /* p */
            aload 2 /* internalLogger */
            invokestatic io.netty.util.internal.PromiseNotificationUtil.tryCancel:(Lio/netty/util/concurrent/Promise;Lio/netty/util/internal/logging/InternalLogger;)V
        end local 3 // io.netty.util.concurrent.Promise p
        15: .line 74
            iinc 4 1
      StackMap locals:
      StackMap stack:
        16: iload 4
            iload 5
            if_icmplt 13
        17: .line 77
            goto 24
        18: .line 78
      StackMap locals: io.netty.util.concurrent.PromiseNotifier io.netty.util.concurrent.Future io.netty.util.internal.logging.InternalLogger
      StackMap stack:
            aload 1 /* future */
            invokeinterface io.netty.util.concurrent.Future.cause:()Ljava/lang/Throwable;
            astore 3 /* cause */
        start local 3 // java.lang.Throwable cause
        19: .line 79
            aload 0 /* this */
            getfield io.netty.util.concurrent.PromiseNotifier.promises:[Lio/netty/util/concurrent/Promise;
            dup
            astore 7
            arraylength
            istore 6
            iconst_0
            istore 5
            goto 23
      StackMap locals: io.netty.util.concurrent.PromiseNotifier io.netty.util.concurrent.Future io.netty.util.internal.logging.InternalLogger java.lang.Throwable top int int io.netty.util.concurrent.Promise[]
      StackMap stack:
        20: aload 7
            iload 5
            aaload
            astore 4 /* p */
        start local 4 // io.netty.util.concurrent.Promise p
        21: .line 80
            aload 4 /* p */
            aload 3 /* cause */
            aload 2 /* internalLogger */
            invokestatic io.netty.util.internal.PromiseNotificationUtil.tryFailure:(Lio/netty/util/concurrent/Promise;Ljava/lang/Throwable;Lio/netty/util/internal/logging/InternalLogger;)V
        end local 4 // io.netty.util.concurrent.Promise p
        22: .line 79
            iinc 5 1
      StackMap locals:
      StackMap stack:
        23: iload 5
            iload 6
            if_icmplt 20
        end local 3 // java.lang.Throwable cause
        24: .line 83
      StackMap locals: io.netty.util.concurrent.PromiseNotifier io.netty.util.concurrent.Future io.netty.util.internal.logging.InternalLogger
      StackMap stack:
            return
        end local 2 // io.netty.util.internal.logging.InternalLogger internalLogger
        end local 1 // io.netty.util.concurrent.Future future
        end local 0 // io.netty.util.concurrent.PromiseNotifier this
      LocalVariableTable:
        Start  End  Slot            Name  Signature
            0   25     0            this  Lio/netty/util/concurrent/PromiseNotifier<TV;TF;>;
            0   25     1          future  TF;
            3   25     2  internalLogger  Lio/netty/util/internal/logging/InternalLogger;
            5   10     3          result  TV;
            7    8     4               p  Lio/netty/util/concurrent/Promise<-TV;>;
           14   15     3               p  Lio/netty/util/concurrent/Promise<-TV;>;
           19   24     3           cause  Ljava/lang/Throwable;
           21   22     4               p  Lio/netty/util/concurrent/Promise<-TV;>;
    Exceptions:
      throws java.lang.Exception
    Signature: (TF;)V
    MethodParameters:
        Name  Flags
      future  
}
Signature: <V:Ljava/lang/Object;F::Lio/netty/util/concurrent/Future<TV;>;>Ljava/lang/Object;Lio/netty/util/concurrent/GenericFutureListener<TF;>;
SourceFile: "PromiseNotifier.java"