class Gem::DocManager

def install_ri_yard
  install_ri_yard_orig if @spec.has_rdoc?
  return if @spec.has_rdoc? == false
  return if @spec.has_yardoc?
  self.class.load_yardoc
  say "Building YARD (yri) index for #{@spec.full_name}..."
  run_yardoc '-c', '-n'
end