class Kramdown::Converter::Pdf

def setup_document(root)

Used in #render_root.

Can be used to define repeatable content or register fonts.

Create a Prawn::Document object and return it. 
def setup_document(root)
  doc = Prawn::Document.new(document_options(root))
  doc.extend(PrawnDocumentExtension)
  doc.converter = self
  doc
end