https://openjdk.java.net/ 
public interface sun.management.jdp.JdpPacket
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: sun.management.jdp.JdpPacket
  super_class: java.lang.Object
{
  public abstract byte[] getPacketData();
    descriptor: ()[B
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Exceptions:
      throws java.io.IOException
}
SourceFile: "JdpPacket.java"