old_contents: from corehq.apps.data_interfaces.interfaces import DataInterface
  from django.utils.translation import ugettext as _
  
  class ImportCases(DataInterface):
      name = _("Import Cases from Excel")
      slug = "import_cases"
      description = _("Import case data from an external Excel file")
      report_template_path = "importer/import_cases.html"
      gide_filters = True
      asynchronous = False
  
new_contents: from corehq.apps.data_interfaces.interfaces import DataInterface
  from django.utils.translation import ugettext_lazy
  
  class ImportCases(DataInterface):
      name = ugettext_lazy("Import Cases from Excel")
      slug = "import_cases"
      description = ugettext_lazy("Import case data from an external Excel file")
      report_template_path = "importer/import_cases.html"
      gide_filters = True
      asynchronous = False
  
subject: Use lazy translation for importer strings