question: private void checkConfidentiality ( AuthenticationPlugin plugin ) throws SQLException { if ( plugin . requiresConfidentiality ( ) && ! isSSLEstablished ( ) ) { throw SQLError . createSQLException ( Messages . getString ( "Connection.AuthenticationPluginRequiresSSL" , new Object [ ] { plugin . getProtocolPluginName ( ) } ) , getExceptionInterceptor ( ) ) ; } }
target:  Check if given plugin requires confidentiality, but connection is without SSL