master
8277120: Use Optional.isEmpty instead of !Optional.isPresent in java.net.http
8197564: HTTP Client implementation
8286386: Address possibly lossy conversions in java.net.http
8303682: Simplify HttpClient DebugLogger
8284780: Need methods to create pre-sized HashSet and LinkedHashSet
8236859: WebSocket over authenticating proxy fails with NPE
8257401: Use switch expressions in jdk.internal.net.http and java.net.http
8308310: HttpClient: Avoid logging or locking from within synchronized blocks