http://xmlgraphics.apache.org/fop/: Apache FOP (Formatting Objects Processor) is the world's first print formatter driven by XSL formatting objects (XSL-FO) and the world's first output independent formatter. It is a Java application that reads a formatting object (FO) tree and renders the resulting pages to a specified output. Output formats currently supported include PDF, PCL, PS, AFP, TIFF, PNG, SVG, XML (area tree representation), Print, AWT and TXT. The primary output target is PDF. (Apache Software Foundation) 
interface org.apache.fop.pdf.PDFDocument$TrailerOutputHelper
  minor version: 0
  major version: 59
  flags: flags: (0x0600) ACC_INTERFACE, ACC_ABSTRACT
  this_class: org.apache.fop.pdf.PDFDocument$TrailerOutputHelper
  super_class: java.lang.Object
{
  public abstract void outputStructureTreeElements(java.io.OutputStream);
    descriptor: (Ljava/io/OutputStream;)V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Exceptions:
      throws java.io.IOException
    MethodParameters:
        Name  Flags
      stream  

  public abstract long outputCrossReferenceObject(java.io.OutputStream, org.apache.fop.pdf.xref.TrailerDictionary, int, int, int);
    descriptor: (Ljava/io/OutputStream;Lorg/apache/fop/pdf/xref/TrailerDictionary;III)J
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Exceptions:
      throws java.io.IOException
    MethodParameters:
                   Name  Flags
      stream             
      trailerDictionary  
      first              
      last               
      size               
}
SourceFile: "PDFDocument.java"
NestHost: org.apache.fop.pdf.PDFDocument
InnerClasses:
  private abstract TrailerOutputHelper = org.apache.fop.pdf.PDFDocument$TrailerOutputHelper of org.apache.fop.pdf.PDFDocument