class WebMock::HttpLibAdapters::AsyncHttpClientAdapter

def disable!
  Async::HTTP.send(:remove_const, :Client)
  Async::HTTP.send(:const_set, :Client, OriginalAsyncHttpClient)
end

def enable!
  Async::HTTP.send(:remove_const, :Client)
  Async::HTTP.send(:const_set, :Client, Async::HTTP::WebMockClientWrapper)
end