ApplicationListener implementation that finds beans registered in the current
ApplicationContext that look like a .Consumer
bean and interrogates it for event handling methods.Configuration classes to ensure
an Environment is created in application context as well as create the necessary beans for
automatic wiring of annotated beans.ApplicationContexts via a
Reactor-specific ImportBeanDefinitionRegistrar.ImportBeanDefinitionRegistrar implementation that configures necessary Reactor components.ApplicationEventPublisher that uses a RingBuffer to dispatch events.Selector that should be created.