Any review comments for this “Hello VM” code for use with VI Java (VMware)?

helloVM.scala

package com.vmware.vim25.mo.samples

import java.net.URL
import org.apache.log4j.Logger
import com.vmware.vim25.mo._

object HelloVM {
  val log = Logger.getLogger(getClass)

  def sayHello(url: String, user: String, pwd: String) {
    log.info("Starting")
    val si = new ServiceInstance(new URL(url), user, pwd, true)
    log.info("ServiceInstance created")
    val rootFolder = si.getRootFolder
    log.info("Root folder: " + rootFolder.getName)

    log.info("Searching for VMs")

    getVMs(rootFolder) match {
      case firstVm :: others =>
        log.info("Hello " + firstVm.getName)
        log.info("GuestOS: " + firstVm.getConfig.getGuestFullName)
        log.info("Multiple snapshots supported: " + firstVm.getCapability.isMultipleSnapshotsSupported)
      case _ => log.warn("No VMs found")
    }
    si.getServerConnection.logout()
  }

  private def getVMs(rootFolder: Folder): List[VirtualMachine] =
    new InventoryNavigator(rootFolder).searchManagedEntities("VirtualMachine") match {
      case null =>
        log.error("searchManagedEntities returned null")
        List[VirtualMachine]()
      case vms => vms map(_.asInstanceOf[VirtualMachine]) toList
    }
}