class EventMachine::WebMockHttpClient

def unbind(reason = nil)
  if !stubbed_webmock_response && WebMock::CallbackRegistry.any_callbacks?
    webmock_response = build_webmock_response
    WebMock::CallbackRegistry.invoke_callbacks(
      {lib: :em_http_request, real_request: true},
      request_signature,
      webmock_response)
  end
  @request_signature = nil
  remove_instance_variable(:@stubbed_webmock_response)
  super
end