https://openjdk.java.net/ 
public interface javax.print.MultiDoc
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: javax.print.MultiDoc
  super_class: java.lang.Object
{
  public abstract javax.print.Doc getDoc();
    descriptor: ()Ljavax/print/Doc;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Exceptions:
      throws java.io.IOException

  public abstract javax.print.MultiDoc next();
    descriptor: ()Ljavax/print/MultiDoc;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Exceptions:
      throws java.io.IOException
}
SourceFile: "MultiDoc.java"