old_contents: from django.contrib import admin
  from djnetaxept.models import NetaxeptPayment, NetaxeptTransaction
  
  admin.site.regiser(NetaxeptPayment)
  admin.site.regiser(NetaxeptTransaction)
new_contents: from django.contrib import admin
  from djnetaxept.models import NetaxeptPayment, NetaxeptTransaction
  
  admin.site.register(NetaxeptPayment)
  admin.site.register(NetaxeptTransaction)
subject: add a t