y default, when a connection to the SSE endpoint is lost, the event source will wait 500&nbsp;ms
 before attempting to reconnect to the SSE endpoint. The SSE endpoint can however control the client-side retry delay
 by including a special <code>retry</code> field value in any sent event. JAX-RS <code>SseEventSource</code> tracks any
 received SSE event <code>retry</code> field values set by the endpoint and adjusts the reconnect delay accordingly,
 using the last received <code>retry</code> field value as t