old_contents: from webob import Response
  from apiversion import APIVersion
  from application import Application
  from apiv1app import APIv1App
  
  class VersionsApp(Application):
  
  	version_classes = [ APIv1App ]
  
  	def APIVersionList(self, args):
  		return Response(content_type = 'application/json', body = self._resultset_to_json([
  			{
  				"id": version._version_identifier(),
  				"links": [
  					{
  						"href": "/" + version._version_identifier(),
  						"rel": "self"
  					}
  				]
  			} for version in self.version_classes
  		]))
  
  	def APIVersion(self, args):
  		return Response(content_type = 'application/json', body = self._resultset_to_json({
  			'todo': 'Report detail'
  		}))
  
  def factory(global_config, **settings):
  	return VersionsApp()
  
new_contents: from webob import Response
  import webob.exc
  from apiversion import APIVersion
  from application import Application
  from apiv1app import APIv1App
  
  class VersionsApp(Application):
  
  	version_classes = [ APIv1App ]
  
  	def _api_version_detail(self, version):
  		return {
  			"id": version._version_identifier(),
  			"links": [
  				{
  					"href": "/" + version._version_identifier(),
  					"rel": "self"
  				}
  			]
  		}
  
  	def APIVersionList(self, args):
  		return Response(status = 300, content_type = 'application/json', body = self._resultset_to_json([
  			self._api_version_detail(version) for version in self.version_classes
  		]))
  
  	def APIVersion(self, version_identifier):
  		versions = [ version for version in self.version_classes if version._version_identifier() == version_identifier ]
  		if not versions:
  			return webob.exc.HTTPNotFound()
  		if len(versions) > 1:
  			raise RuntimeError("Multiple API versions with identifier '%s'" % version_identifier)
  		return Response(content_type = 'application/json', body = self._resultset_to_json({
  			self._api_version_detail(versions[0])
  		}))
  
  def factory(global_config, **settings):
  	return VersionsApp()
  
subject: Correct the HTTP status from GET / - it should be 300 (Multiple Choices) not 200. Implement the details of a given version.