old_contents: import os
  import sys
  from django.db.models import Q, F
  from helloworldservice.models import HelloWorldService, HelloWorldTenant
  from observers.base.SyncInstanceUsingAnsible import SyncInstanceUsingAnsible
  
  parentdir = os.path.join(os.path.dirname(__file__), "..")
  sys.path.insert(0, parentdir)
  
  # Class to define how we sync a tenant. Using SyncInstanceUsingAnsible we
  # indicate where the find the YAML for ansible, where to find the SSH key,
  # and the logic for determining what tenant needs updating, what additional
  # attributes are needed, and how to delete an instance.
  
  
  class SyncHelloWorldServiceTenant(SyncInstanceUsingAnsible):
      # Indicates the position in the data model, this will run when XOS needs to
      # enact a HelloWorldTenant
      provides = [HelloWorldTenant]
      # The actual model being enacted, usually the same as provides.
      observes = HelloWorldTenant
      # Number of miliseconds between interruptions of the observer
      requested_interval = 0
      # The ansible template to run
      template_name = "sync_helloworldtenant.yaml"
      # The location of the SSH private key to use when ansible connects to
      # instances.
      service_key_name = "/opt/xos/observers/helloworldservice/helloworldservice_private_key"
  
      def __init__(self, *args, **kwargs):
          super(SyncHelloWorldServiceTenant, self).__init__(*args, **kwargs)
  
      # Defines the logic for determining what HelloWorldTenants need to be
      # enacted.
      def fetch_pending(self, deleted):
          # If the update is not a deletion, then we get all of the instnaces that
          # have been updated or have not been enacted.
          if (not deleted):
              objs = HelloWorldTenant.get_tenant_objects().filter(
                  Q(enacted__lt=F('updated')) | Q(enacted=None), Q(lazy_blocked=False))
          else:
              # If this is a deletion we get all of the deleted tenants..
              objs = HelloWorldTenant.get_deleted_tenant_objects()
  
          return objs
  
      # Gets the attributes that are used by the Ansible template but are not
      # part of the set of default attributes.
      def get_extra_attributes(self, o):
          return {"display_message": o.display_message}
  
      # Defines how to delete a HelloWorldTenant, since we don't have anyhting
      # special to cleanup or dependencies we do nothing.
      def delete_record(self, m):
          return
  
new_contents: import os
  import sys
  from django.db.models import Q, F
  from helloworldservice.models import HelloWorldService, HelloWorldTenant
  from observers.base.SyncInstanceUsingAnsible import SyncInstanceUsingAnsible
  
  parentdir = os.path.join(os.path.dirname(__file__), "..")
  sys.path.insert(0, parentdir)
  
  # Class to define how we sync a tenant. Using SyncInstanceUsingAnsible we
  # indicate where the find the YAML for ansible, where to find the SSH key,
  # and the logic for determining what tenant needs updating, what additional
  # attributes are needed, and how to delete an instance.
  
  
  class SyncHelloWorldServiceTenant(SyncInstanceUsingAnsible):
      # Indicates the position in the data model, this will run when XOS needs to
      # enact a HelloWorldTenant
      provides = [HelloWorldTenant]
      # The actual model being enacted, usually the same as provides.
      observes = HelloWorldTenant
      # Number of miliseconds between interruptions of the observer
      requested_interval = 0
      # The ansible template to run
      template_name = "sync_helloworldtenant.yaml"
      # The location of the SSH private key to use when ansible connects to
      # instances.
      service_key_name = "/opt/xos/observers/helloworldservice/helloworldservice_private_key"
  
      def __init__(self, *args, **kwargs):
          super(SyncHelloWorldServiceTenant, self).__init__(*args, **kwargs)
  
      # Defines the logic for determining what HelloWorldTenants need to be
      # enacted.
      def fetch_pending(self, deleted):
          # If the update is not a deletion, then we get all of the instnaces that
          # have been updated or have not been enacted.
          if (not deleted):
              objs = HelloWorldTenant.get_tenant_objects().filter(
                  Q(enacted__lt=F('updated')) | Q(enacted=None), Q(lazy_blocked=False))
          else:
              # If this is a deletion we get all of the deleted tenants..
              objs = HelloWorldTenant.get_deleted_tenant_objects()
  
          return objs
  
      # Gets the attributes that are used by the Ansible template but are not
      # part of the set of default attributes.
      def get_extra_attributes(self, o):
          return {"display_message": o.display_message}
  
      # Defines how to delete a HelloWorldTenant, since we don't have anyhting
      # special to cleanup or dependencies we do nothing.
      # def delete_record(self, m):
          # return
  
subject: remove what is hopefully unncessary code