class ThreadSafeHost < HostBase
  Subclass = prepare_using RSpec::Core::MemoizedHelpers,
    :initialize => lambda { |*| @__memoized = ThreadsafeMemoized.new },
    :verify     => lambda { |*| expect(__memoized).to be_a_kind_of RSpec::Core::MemoizedHelpers::ThreadsafeMemoized }
end