old_contents: from django.contrib import admin
  from models import Category, Item, Location, Instance, Attribute
  
  class CategoryAdmin(admin.ModelAdmin):
      pass
  
  class ItemAdmin(admin.ModelAdmin):
      pass
  
  class LocationAdmin(admin.ModelAdmin):
      pass
  
  class InstanceAdmin(admin.ModelAdmin):
      pass
  
  class AttributeAdmin(admin.ModelAdmin):
      pass
  
  admin.site.register(Category, CategoryAdmin)
  admin.site.register(Item, ItemAdmin)
  admin.site.register(Location, LocationAdmin)
  admin.site.register(Instance, InstanceAdmin)
  admin.site.register(Attribute, AttributeAdmin)
new_contents: from django.contrib import admin
  from models import Category, Item, Location, Instance, Attribute
  
  class CategoryAdmin(admin.ModelAdmin):
      pass
  
  class ItemAdmin(admin.ModelAdmin):
      pass
  
  class LocationAdmin(admin.ModelAdmin):
      pass
  
  class InstanceAdmin(admin.ModelAdmin):
      pass
  
  class AttributeAdmin(admin.ModelAdmin):
      pass
  
  
  admin.site.register(Category, CategoryAdmin)
  admin.site.register(Item, ItemAdmin)
  admin.site.register(Location, LocationAdmin)
  admin.site.register(Instance, InstanceAdmin)
  admin.site.register(Attribute, AttributeAdmin)
  
subject: Test git staging.