old_contents: from zope.interface import implements
  from twisted.application.service import IServiceMaker
  from twisted.plugin import IPlugin
  
  from vumi.start_worker import VumiService, StartWorkerOptions
  
  
  # This create the service, runnable on command line with twistd
  class VumiServiceMaker(object):
      implements(IServiceMaker, IPlugin)
      # the name of our plugin, this will be the subcommand for twistd
      # e.g. $ twistd -n start_worker --option1= ...
      tapname = "start_worker"
      # description, also for twistd
      description = "Start a Vumi worker"
      # what command line options does this service expose
      options = StartWorkerOptions
  
      def makeService(self, options):
          return VumiService(options)
  
  # Announce the plugin as a service maker for twistd
  # See: http://twistedmatrix.com/documents/current/core/howto/tap.html
  serviceMaker = VumiServiceMaker()
  
new_contents: from zope.interface import implements
  from twisted.application.service import IServiceMaker
  from twisted.plugin import IPlugin
  
  from vumi.start_worker import VumiService, StartWorkerOptions
  
  
  # This create the service, runnable on command line with twistd
  class VumiServiceMaker(object):
      implements(IServiceMaker, IPlugin)
      # the name of our plugin, this will be the subcommand for twistd
      # e.g. $ twistd -n start_worker --option1= ...
      tapname = "vumi_worker"
      # description, also for twistd
      description = "Start a Vumi worker"
      # what command line options does this service expose
      options = StartWorkerOptions
  
      def makeService(self, options):
          return VumiService(options)
  
  
  class DeprecatedServiceMaker(VumiServiceMaker):
      tapname = "start_worker"
      description = "Deprecated copy of vumi_worker. Use vumi_worker instead."
  
  # Announce the plugin as a service maker for twistd
  # See: http://twistedmatrix.com/documents/current/core/howto/tap.html
  serviceMaker = VumiServiceMaker()
  deprecatedMaker = DeprecatedServiceMaker()
  
subject: Make vumi worker service available as vumi_worker and deprecate start_worker.