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 abstract class io.netty.channel.MultithreadEventLoopGroup extends io.netty.util.concurrent.MultithreadEventExecutorGroup implements io.netty.channel.EventLoopGroup
  minor version: 0
  major version: 59
  flags: flags: (0x0421) ACC_PUBLIC, ACC_SUPER, ACC_ABSTRACT
  this_class: io.netty.channel.MultithreadEventLoopGroup
  super_class: io.netty.util.concurrent.MultithreadEventExecutorGroup
{
  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 static final int DEFAULT_EVENT_LOOP_THREADS;
    descriptor: I
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL

  static void <clinit>();
    descriptor: ()V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=4, locals=0, args_size=0
         0: .line 35
            ldc Lio/netty/channel/MultithreadEventLoopGroup;
            invokestatic io.netty.util.internal.logging.InternalLoggerFactory.getInstance:(Ljava/lang/Class;)Lio/netty/util/internal/logging/InternalLogger;
            putstatic io.netty.channel.MultithreadEventLoopGroup.logger:Lio/netty/util/internal/logging/InternalLogger;
         1: .line 40
            iconst_1
         2: .line 41
            ldc "io.netty.eventLoopThreads"
            invokestatic io.netty.util.NettyRuntime.availableProcessors:()I
            iconst_2
            imul
         3: .line 40
            invokestatic io.netty.util.internal.SystemPropertyUtil.getInt:(Ljava/lang/String;I)I
            invokestatic java.lang.Math.max:(II)I
            putstatic io.netty.channel.MultithreadEventLoopGroup.DEFAULT_EVENT_LOOP_THREADS:I
         4: .line 43
            getstatic io.netty.channel.MultithreadEventLoopGroup.logger:Lio/netty/util/internal/logging/InternalLogger;
            invokeinterface io.netty.util.internal.logging.InternalLogger.isDebugEnabled:()Z
            ifeq 6
         5: .line 44
            getstatic io.netty.channel.MultithreadEventLoopGroup.logger:Lio/netty/util/internal/logging/InternalLogger;
            ldc "-Dio.netty.eventLoopThreads: {}"
            getstatic io.netty.channel.MultithreadEventLoopGroup.DEFAULT_EVENT_LOOP_THREADS:I
            invokestatic java.lang.Integer.valueOf:(I)Ljava/lang/Integer;
            invokeinterface io.netty.util.internal.logging.InternalLogger.debug:(Ljava/lang/String;Ljava/lang/Object;)V
         6: .line 46
      StackMap locals:
      StackMap stack:
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  protected void <init>(int, java.util.concurrent.Executor, java.lang.Object[]);
    descriptor: (ILjava/util/concurrent/Executor;[Ljava/lang/Object;)V
    flags: (0x0084) ACC_PROTECTED, ACC_VARARGS
    Code:
      stack=4, locals=4, args_size=4
        start local 0 // io.netty.channel.MultithreadEventLoopGroup this
        start local 1 // int nThreads
        start local 2 // java.util.concurrent.Executor executor
        start local 3 // java.lang.Object[] args
         0: .line 52
            aload 0 /* this */
            iload 1 /* nThreads */
            ifne 1
            getstatic io.netty.channel.MultithreadEventLoopGroup.DEFAULT_EVENT_LOOP_THREADS:I
            goto 2
      StackMap locals:
      StackMap stack: uninitialized-this
         1: iload 1 /* nThreads */
      StackMap locals: uninitialized-this int java.util.concurrent.Executor java.lang.Object[]
      StackMap stack: uninitialized-this int
         2: aload 2 /* executor */
            aload 3 /* args */
            invokespecial io.netty.util.concurrent.MultithreadEventExecutorGroup.<init>:(ILjava/util/concurrent/Executor;[Ljava/lang/Object;)V
         3: .line 53
            return
        end local 3 // java.lang.Object[] args
        end local 2 // java.util.concurrent.Executor executor
        end local 1 // int nThreads
        end local 0 // io.netty.channel.MultithreadEventLoopGroup this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    4     0      this  Lio/netty/channel/MultithreadEventLoopGroup;
            0    4     1  nThreads  I
            0    4     2  executor  Ljava/util/concurrent/Executor;
            0    4     3      args  [Ljava/lang/Object;
    MethodParameters:
          Name  Flags
      nThreads  
      executor  
      args      

  protected void <init>(int, java.util.concurrent.ThreadFactory, java.lang.Object[]);
    descriptor: (ILjava/util/concurrent/ThreadFactory;[Ljava/lang/Object;)V
    flags: (0x0084) ACC_PROTECTED, ACC_VARARGS
    Code:
      stack=4, locals=4, args_size=4
        start local 0 // io.netty.channel.MultithreadEventLoopGroup this
        start local 1 // int nThreads
        start local 2 // java.util.concurrent.ThreadFactory threadFactory
        start local 3 // java.lang.Object[] args
         0: .line 59
            aload 0 /* this */
            iload 1 /* nThreads */
            ifne 1
            getstatic io.netty.channel.MultithreadEventLoopGroup.DEFAULT_EVENT_LOOP_THREADS:I
            goto 2
      StackMap locals:
      StackMap stack: uninitialized-this
         1: iload 1 /* nThreads */
      StackMap locals: uninitialized-this int java.util.concurrent.ThreadFactory java.lang.Object[]
      StackMap stack: uninitialized-this int
         2: aload 2 /* threadFactory */
            aload 3 /* args */
            invokespecial io.netty.util.concurrent.MultithreadEventExecutorGroup.<init>:(ILjava/util/concurrent/ThreadFactory;[Ljava/lang/Object;)V
         3: .line 60
            return
        end local 3 // java.lang.Object[] args
        end local 2 // java.util.concurrent.ThreadFactory threadFactory
        end local 1 // int nThreads
        end local 0 // io.netty.channel.MultithreadEventLoopGroup this
      LocalVariableTable:
        Start  End  Slot           Name  Signature
            0    4     0           this  Lio/netty/channel/MultithreadEventLoopGroup;
            0    4     1       nThreads  I
            0    4     2  threadFactory  Ljava/util/concurrent/ThreadFactory;
            0    4     3           args  [Ljava/lang/Object;
    MethodParameters:
               Name  Flags
      nThreads       
      threadFactory  
      args           

  protected void <init>(int, java.util.concurrent.Executor, io.netty.util.concurrent.EventExecutorChooserFactory, java.lang.Object[]);
    descriptor: (ILjava/util/concurrent/Executor;Lio/netty/util/concurrent/EventExecutorChooserFactory;[Ljava/lang/Object;)V
    flags: (0x0084) ACC_PROTECTED, ACC_VARARGS
    Code:
      stack=5, locals=5, args_size=5
        start local 0 // io.netty.channel.MultithreadEventLoopGroup this
        start local 1 // int nThreads
        start local 2 // java.util.concurrent.Executor executor
        start local 3 // io.netty.util.concurrent.EventExecutorChooserFactory chooserFactory
        start local 4 // java.lang.Object[] args
         0: .line 68
            aload 0 /* this */
            iload 1 /* nThreads */
            ifne 1
            getstatic io.netty.channel.MultithreadEventLoopGroup.DEFAULT_EVENT_LOOP_THREADS:I
            goto 2
      StackMap locals:
      StackMap stack: uninitialized-this
         1: iload 1 /* nThreads */
      StackMap locals: uninitialized-this int java.util.concurrent.Executor io.netty.util.concurrent.EventExecutorChooserFactory java.lang.Object[]
      StackMap stack: uninitialized-this int
         2: aload 2 /* executor */
            aload 3 /* chooserFactory */
            aload 4 /* args */
            invokespecial io.netty.util.concurrent.MultithreadEventExecutorGroup.<init>:(ILjava/util/concurrent/Executor;Lio/netty/util/concurrent/EventExecutorChooserFactory;[Ljava/lang/Object;)V
         3: .line 69
            return
        end local 4 // java.lang.Object[] args
        end local 3 // io.netty.util.concurrent.EventExecutorChooserFactory chooserFactory
        end local 2 // java.util.concurrent.Executor executor
        end local 1 // int nThreads
        end local 0 // io.netty.channel.MultithreadEventLoopGroup this
      LocalVariableTable:
        Start  End  Slot            Name  Signature
            0    4     0            this  Lio/netty/channel/MultithreadEventLoopGroup;
            0    4     1        nThreads  I
            0    4     2        executor  Ljava/util/concurrent/Executor;
            0    4     3  chooserFactory  Lio/netty/util/concurrent/EventExecutorChooserFactory;
            0    4     4            args  [Ljava/lang/Object;
    MethodParameters:
                Name  Flags
      nThreads        
      executor        
      chooserFactory  
      args            

  protected java.util.concurrent.ThreadFactory newDefaultThreadFactory();
    descriptor: ()Ljava/util/concurrent/ThreadFactory;
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=4, locals=1, args_size=1
        start local 0 // io.netty.channel.MultithreadEventLoopGroup this
         0: .line 73
            new io.netty.util.concurrent.DefaultThreadFactory
            dup
            aload 0 /* this */
            invokevirtual java.lang.Object.getClass:()Ljava/lang/Class;
            bipush 10
            invokespecial io.netty.util.concurrent.DefaultThreadFactory.<init>:(Ljava/lang/Class;I)V
            areturn
        end local 0 // io.netty.channel.MultithreadEventLoopGroup this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lio/netty/channel/MultithreadEventLoopGroup;

  public io.netty.channel.EventLoop next();
    descriptor: ()Lio/netty/channel/EventLoop;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // io.netty.channel.MultithreadEventLoopGroup this
         0: .line 78
            aload 0 /* this */
            invokespecial io.netty.util.concurrent.MultithreadEventExecutorGroup.next:()Lio/netty/util/concurrent/EventExecutor;
            checkcast io.netty.channel.EventLoop
            areturn
        end local 0 // io.netty.channel.MultithreadEventLoopGroup this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lio/netty/channel/MultithreadEventLoopGroup;

  protected abstract io.netty.channel.EventLoop newChild(java.util.concurrent.Executor, java.lang.Object[]);
    descriptor: (Ljava/util/concurrent/Executor;[Ljava/lang/Object;)Lio/netty/channel/EventLoop;
    flags: (0x0484) ACC_PROTECTED, ACC_VARARGS, ACC_ABSTRACT
    Exceptions:
      throws java.lang.Exception
    MethodParameters:
          Name  Flags
      executor  
      args      

  public io.netty.channel.ChannelFuture register(io.netty.channel.Channel);
    descriptor: (Lio/netty/channel/Channel;)Lio/netty/channel/ChannelFuture;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // io.netty.channel.MultithreadEventLoopGroup this
        start local 1 // io.netty.channel.Channel channel
         0: .line 86
            aload 0 /* this */
            invokevirtual io.netty.channel.MultithreadEventLoopGroup.next:()Lio/netty/channel/EventLoop;
            aload 1 /* channel */
            invokeinterface io.netty.channel.EventLoop.register:(Lio/netty/channel/Channel;)Lio/netty/channel/ChannelFuture;
            areturn
        end local 1 // io.netty.channel.Channel channel
        end local 0 // io.netty.channel.MultithreadEventLoopGroup this
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    1     0     this  Lio/netty/channel/MultithreadEventLoopGroup;
            0    1     1  channel  Lio/netty/channel/Channel;
    MethodParameters:
         Name  Flags
      channel  

  public io.netty.channel.ChannelFuture register(io.netty.channel.ChannelPromise);
    descriptor: (Lio/netty/channel/ChannelPromise;)Lio/netty/channel/ChannelFuture;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // io.netty.channel.MultithreadEventLoopGroup this
        start local 1 // io.netty.channel.ChannelPromise promise
         0: .line 91
            aload 0 /* this */
            invokevirtual io.netty.channel.MultithreadEventLoopGroup.next:()Lio/netty/channel/EventLoop;
            aload 1 /* promise */
            invokeinterface io.netty.channel.EventLoop.register:(Lio/netty/channel/ChannelPromise;)Lio/netty/channel/ChannelFuture;
            areturn
        end local 1 // io.netty.channel.ChannelPromise promise
        end local 0 // io.netty.channel.MultithreadEventLoopGroup this
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    1     0     this  Lio/netty/channel/MultithreadEventLoopGroup;
            0    1     1  promise  Lio/netty/channel/ChannelPromise;
    MethodParameters:
         Name  Flags
      promise  

  public io.netty.channel.ChannelFuture register(io.netty.channel.Channel, io.netty.channel.ChannelPromise);
    descriptor: (Lio/netty/channel/Channel;Lio/netty/channel/ChannelPromise;)Lio/netty/channel/ChannelFuture;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=3, args_size=3
        start local 0 // io.netty.channel.MultithreadEventLoopGroup this
        start local 1 // io.netty.channel.Channel channel
        start local 2 // io.netty.channel.ChannelPromise promise
         0: .line 97
            aload 0 /* this */
            invokevirtual io.netty.channel.MultithreadEventLoopGroup.next:()Lio/netty/channel/EventLoop;
            aload 1 /* channel */
            aload 2 /* promise */
            invokeinterface io.netty.channel.EventLoop.register:(Lio/netty/channel/Channel;Lio/netty/channel/ChannelPromise;)Lio/netty/channel/ChannelFuture;
            areturn
        end local 2 // io.netty.channel.ChannelPromise promise
        end local 1 // io.netty.channel.Channel channel
        end local 0 // io.netty.channel.MultithreadEventLoopGroup this
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    1     0     this  Lio/netty/channel/MultithreadEventLoopGroup;
            0    1     1  channel  Lio/netty/channel/Channel;
            0    1     2  promise  Lio/netty/channel/ChannelPromise;
    RuntimeVisibleAnnotations: 
      java.lang.Deprecated()
    MethodParameters:
         Name  Flags
      channel  
      promise  

  public io.netty.util.concurrent.EventExecutor next();
    descriptor: ()Lio/netty/util/concurrent/EventExecutor;
    flags: (0x1041) ACC_PUBLIC, ACC_BRIDGE, ACC_SYNTHETIC
    Code:
      stack=1, locals=1, args_size=1
         0: .line 1
            aload 0
            invokevirtual io.netty.channel.MultithreadEventLoopGroup.next:()Lio/netty/channel/EventLoop;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  protected io.netty.util.concurrent.EventExecutor newChild(java.util.concurrent.Executor, java.lang.Object[]);
    descriptor: (Ljava/util/concurrent/Executor;[Ljava/lang/Object;)Lio/netty/util/concurrent/EventExecutor;
    flags: (0x10c4) ACC_PROTECTED, ACC_BRIDGE, ACC_VARARGS, ACC_SYNTHETIC
    Code:
      stack=3, locals=3, args_size=3
         0: .line 1
            aload 0
            aload 1
            aload 2
            invokevirtual io.netty.channel.MultithreadEventLoopGroup.newChild:(Ljava/util/concurrent/Executor;[Ljava/lang/Object;)Lio/netty/channel/EventLoop;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature
    Exceptions:
      throws java.lang.Exception
}
SourceFile: "MultithreadEventLoopGroup.java"