class Nokogiri::XML::Node

def do_xinclude(options = XML::ParseOptions::DEFAULT_XML)

passed to it, allowing more convenient modification of the parser options.
Nokogiri::XML::ParseOptions object initialized from +options+, will be
Do xinclude substitution on the subtree below node. If given a block, a
## 
def do_xinclude(options = XML::ParseOptions::DEFAULT_XML)
  options = Nokogiri::XML::ParseOptions.new(options) if Integer === options
  yield options if block_given?
  # call c extension
  process_xincludes(options.to_i)
end