There's no documentation for this item.

Source Code

# File uri/mailto.rb, line 182
def check_headers(v)
  return true unless v
  return true if v.size == 0

  if OPAQUE !~ v || 
      /\A(#{HEADER_PATTERN}(?:\&#{HEADER_PATTERN})*)\z/o !~ v
    raise InvalidComponentError,
      "bad component(expected opaque component): #{v}"
  end

  return true
end