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.channel.local.LocalEventLoopGroup extends io.netty.channel.DefaultEventLoopGroup
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: io.netty.channel.local.LocalEventLoopGroup
  super_class: io.netty.channel.DefaultEventLoopGroup
{
  public void <init>();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // io.netty.channel.local.LocalEventLoopGroup this
         0: .line 31
            aload 0 /* this */
            invokespecial io.netty.channel.DefaultEventLoopGroup.<init>:()V
            return
        end local 0 // io.netty.channel.local.LocalEventLoopGroup this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lio/netty/channel/local/LocalEventLoopGroup;

  public void <init>(int);
    descriptor: (I)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // io.netty.channel.local.LocalEventLoopGroup this
        start local 1 // int nThreads
         0: .line 39
            aload 0 /* this */
            iload 1 /* nThreads */
            invokespecial io.netty.channel.DefaultEventLoopGroup.<init>:(I)V
         1: .line 40
            return
        end local 1 // int nThreads
        end local 0 // io.netty.channel.local.LocalEventLoopGroup this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    2     0      this  Lio/netty/channel/local/LocalEventLoopGroup;
            0    2     1  nThreads  I
    MethodParameters:
          Name  Flags
      nThreads  

  public void <init>(int, java.util.concurrent.ThreadFactory);
    descriptor: (ILjava/util/concurrent/ThreadFactory;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=3, args_size=3
        start local 0 // io.netty.channel.local.LocalEventLoopGroup this
        start local 1 // int nThreads
        start local 2 // java.util.concurrent.ThreadFactory threadFactory
         0: .line 49
            aload 0 /* this */
            iload 1 /* nThreads */
            aload 2 /* threadFactory */
            invokespecial io.netty.channel.DefaultEventLoopGroup.<init>:(ILjava/util/concurrent/ThreadFactory;)V
         1: .line 50
            return
        end local 2 // java.util.concurrent.ThreadFactory threadFactory
        end local 1 // int nThreads
        end local 0 // io.netty.channel.local.LocalEventLoopGroup this
      LocalVariableTable:
        Start  End  Slot           Name  Signature
            0    2     0           this  Lio/netty/channel/local/LocalEventLoopGroup;
            0    2     1       nThreads  I
            0    2     2  threadFactory  Ljava/util/concurrent/ThreadFactory;
    MethodParameters:
               Name  Flags
      nThreads       
      threadFactory  
}
SourceFile: "LocalEventLoopGroup.java"
    RuntimeVisibleAnnotations: 
      java.lang.Deprecated()