class Nokogiri::HTML5::Document

def self.parse(string_or_io, url = nil, encoding = nil, **options, &block)
  yield options if block
  string_or_io = "" unless string_or_io
  if string_or_io.respond_to?(:encoding) && string_or_io.encoding.name != "ASCII-8BIT"
    encoding ||= string_or_io.encoding.name
  end
  if string_or_io.respond_to?(:read) && string_or_io.respond_to?(:path)
    url ||= string_or_io.path
  end
  unless string_or_io.respond_to?(:read) || string_or_io.respond_to?(:to_str)
    raise ArgumentError, "not a string or IO object"
  end
  do_parse(string_or_io, url, encoding, options)
end