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) 
final class io.netty.channel.PendingBytesTracker$NoopPendingBytesTracker extends io.netty.channel.PendingBytesTracker
  minor version: 0
  major version: 59
  flags: flags: (0x0030) ACC_FINAL, ACC_SUPER
  this_class: io.netty.channel.PendingBytesTracker$NoopPendingBytesTracker
  super_class: io.netty.channel.PendingBytesTracker
{
  void <init>(io.netty.channel.MessageSizeEstimator$Handle);
    descriptor: (Lio/netty/channel/MessageSizeEstimator$Handle;)V
    flags: (0x0000) 
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // io.netty.channel.PendingBytesTracker$NoopPendingBytesTracker this
        start local 1 // io.netty.channel.MessageSizeEstimator$Handle estimatorHandle
         0: .line 91
            aload 0 /* this */
            aload 1 /* estimatorHandle */
            invokespecial io.netty.channel.PendingBytesTracker.<init>:(Lio/netty/channel/MessageSizeEstimator$Handle;)V
         1: .line 92
            return
        end local 1 // io.netty.channel.MessageSizeEstimator$Handle estimatorHandle
        end local 0 // io.netty.channel.PendingBytesTracker$NoopPendingBytesTracker this
      LocalVariableTable:
        Start  End  Slot             Name  Signature
            0    2     0             this  Lio/netty/channel/PendingBytesTracker$NoopPendingBytesTracker;
            0    2     1  estimatorHandle  Lio/netty/channel/MessageSizeEstimator$Handle;
    MethodParameters:
                 Name  Flags
      estimatorHandle  

  public void incrementPendingOutboundBytes(long);
    descriptor: (J)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=0, locals=3, args_size=2
        start local 0 // io.netty.channel.PendingBytesTracker$NoopPendingBytesTracker this
        start local 1 // long bytes
         0: .line 97
            return
        end local 1 // long bytes
        end local 0 // io.netty.channel.PendingBytesTracker$NoopPendingBytesTracker this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    1     0   this  Lio/netty/channel/PendingBytesTracker$NoopPendingBytesTracker;
            0    1     1  bytes  J
    MethodParameters:
       Name  Flags
      bytes  

  public void decrementPendingOutboundBytes(long);
    descriptor: (J)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=0, locals=3, args_size=2
        start local 0 // io.netty.channel.PendingBytesTracker$NoopPendingBytesTracker this
        start local 1 // long bytes
         0: .line 102
            return
        end local 1 // long bytes
        end local 0 // io.netty.channel.PendingBytesTracker$NoopPendingBytesTracker this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    1     0   this  Lio/netty/channel/PendingBytesTracker$NoopPendingBytesTracker;
            0    1     1  bytes  J
    MethodParameters:
       Name  Flags
      bytes  
}
SourceFile: "PendingBytesTracker.java"
NestHost: io.netty.channel.PendingBytesTracker
InnerClasses:
  public abstract Handle = io.netty.channel.MessageSizeEstimator$Handle of io.netty.channel.MessageSizeEstimator
  private final NoopPendingBytesTracker = io.netty.channel.PendingBytesTracker$NoopPendingBytesTracker of io.netty.channel.PendingBytesTracker