class Aws::Rest::Response::Headers

def extract_header_map(headers, name, ref, data)
  data[name] = {}
  prefix = ref.location_name || ''
  headers.each do |header_name, header_value|
    if match = header_name.match(/^#{prefix}(.+)/i)
      data[name][match[1]] = header_value
    end
  end
end