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.util.internal.LongAdderCounter extends java.util.concurrent.atomic.LongAdder implements io.netty.util.internal.LongCounter
  minor version: 0
  major version: 59
  flags: flags: (0x0030) ACC_FINAL, ACC_SUPER
  this_class: io.netty.util.internal.LongAdderCounter
  super_class: java.util.concurrent.atomic.LongAdder
{
  void <init>();
    descriptor: ()V
    flags: (0x0000) 
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // io.netty.util.internal.LongAdderCounter this
         0: .line 20
            aload 0 /* this */
            invokespecial java.util.concurrent.atomic.LongAdder.<init>:()V
            return
        end local 0 // io.netty.util.internal.LongAdderCounter this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lio/netty/util/internal/LongAdderCounter;

  public long value();
    descriptor: ()J
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // io.netty.util.internal.LongAdderCounter this
         0: .line 24
            aload 0 /* this */
            invokevirtual io.netty.util.internal.LongAdderCounter.longValue:()J
            lreturn
        end local 0 // io.netty.util.internal.LongAdderCounter this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lio/netty/util/internal/LongAdderCounter;
}
SourceFile: "LongAdderCounter.java"