https://openjdk.java.net/ 
public interface sun.nio.ch.SocketOpts$IP$TCP extends sun.nio.ch.SocketOpts$IP
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: sun.nio.ch.SocketOpts$IP$TCP
  super_class: java.lang.Object
{
  public abstract boolean noDelay();
    descriptor: ()Z
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Exceptions:
      throws java.io.IOException

  public abstract sun.nio.ch.SocketOpts$IP$TCP noDelay(boolean);
    descriptor: (Z)Lsun/nio/ch/SocketOpts$IP$TCP;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Exceptions:
      throws java.io.IOException
    MethodParameters:
      Name  Flags
      b     
}
SourceFile: "SocketOpts.java"
NestHost: sun.nio.ch.SocketOpts
InnerClasses:
  public abstract IP = sun.nio.ch.SocketOpts$IP of sun.nio.ch.SocketOpts
  public abstract TCP = sun.nio.ch.SocketOpts$IP$TCP of sun.nio.ch.SocketOpts$IP