Serves as the base channel session for executing remote commands - including a full shell

try (client = SshClient.setUpDefaultClient()) {
     client.start();

     try (ClientSession s = client.connect(getCurrentTestName(), "localhost", port).verify(CONNECT_TIMEOUT).getSession()) {
         s.addPasswordIdentity(getCurrentTestName());
         s.auth().verify(AUTH_TIMEOUT);

         try (ChannelExec shell = s.createExecChannel("my super duper command")) {
             shell.setEnv("var1", "val1");
             shell.setEnv("var2", "val2");
             ...etc...

             shell.setPtyType(...);
             shell.setPtyLines(...);
             ...etc...

             shell.open().verify(OPEN_TIMEOUT);
             shell.waitFor(ClientChannel.CLOSED, TimeUnit.SECONDS.toMillis(17L));    // can use zero for infinite wait

             Integer status = shell.getExitStatus();
             if (status.intValue() != 0) {
                 ...error...
             }
         }
     } finally {
         client.stop();
     }
}