called to synchronize with the external cache (see
L<SSL_CTX_sess_set_get_cb(3)>).
+=head1 RETURN VALUES
+
+SSL_CTX_flush_sessions() does not return a value.
+
=head1 SEE ALSO
L<ssl(7)>,
=head1 COPYRIGHT
-Copyright 2001-2016 The OpenSSL Project Authors. All Rights Reserved.
+Copyright 2001-2017 The OpenSSL Project Authors. All Rights Reserved.
Licensed under the OpenSSL license (the "License"). You may not use
this file except in compliance with the License. You can obtain a copy