old_contents: from django.contrib import admin
  from models import TestName
  
  class TestNameAdmin(admin.ModelAdmin):
      model = TestName
      alphabet_filter = 'sorted_name'
  
  admin.site.register(TestName, TestNameAdmin)
new_contents: from django.contrib import admin
  from models import TestName
  
  class TestNameAdmin(admin.ModelAdmin):
      model = TestName
      alphabet_filter = 'sorted_name'
      
      ## Testing a custom Default Alphabet
      #DEFAULT_ALPHABET = 'ABC'
      
      ## Testing a blank alphabet-- only shows the characters in the database
      #DEFAULT_ALPHABET = ''
      
      ## Testing a callable
      def DEFAULT_ALPHABET(self):
          return "I D K W"
  
  admin.site.register(TestName, TestNameAdmin)
subject: Put in some testing code to test the new overrides