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 final class io.netty.channel.internal.ChannelUtils
  minor version: 0
  major version: 59
  flags: flags: (0x0031) ACC_PUBLIC, ACC_FINAL, ACC_SUPER
  this_class: io.netty.channel.internal.ChannelUtils
  super_class: java.lang.Object
{
  public static final int MAX_BYTES_PER_GATHERING_WRITE_ATTEMPTED_LOW_THRESHOLD;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 4096

  public static final int WRITE_STATUS_SNDBUF_FULL;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 2147483647

  private void <init>();
    descriptor: ()V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // io.netty.channel.internal.ChannelUtils this
         0: .line 22
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 23
            return
        end local 0 // io.netty.channel.internal.ChannelUtils this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lio/netty/channel/internal/ChannelUtils;
}
SourceFile: "ChannelUtils.java"