The implementation of the deprecated `SSLSession.getPeerCertificateChain()` method has been removed from the JDK in the SunJSSE provider and the HTTP client implementation. The default implementation of this method has been changed to throw UnsupportedOperationException.

`SSLSession.getPeerCertificateChain()` is a deprecated method and will be removed in a future release. To mitigate the removal compatibility impact, applications should use the `SSLSession.getPeerCertificates()` method instead. For service providers, please remove this method from the existing implementation, and do not support this method in any new implementation.