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 interface io.netty.channel.group.ChannelMatcher
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: io.netty.channel.group.ChannelMatcher
  super_class: java.lang.Object
{
  public abstract boolean matches(io.netty.channel.Channel);
    descriptor: (Lio/netty/channel/Channel;)Z
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
         Name  Flags
      channel  
}
SourceFile: "ChannelMatcher.java"