text: from rest_framework import serializers
  from .models import Domain, Subject, Product, UsageType, Usage, DataInterface
  
  
  class DomainSerializer(serializers.ModelSerializer):
      class Meta:
          model = Domain
          fields = "__all__"
  
  
  class SubjectSerializer(serializers.ModelSerializer):
      class Meta:
          model = Subject
          fields = "__all__"
  
  
  class ProductSerializer(serializers.ModelSerializer):
      class Meta:
          model = Product
          fields = "__all__"
  
  
  class UsageTypeSerializer(serializers.ModelSerializer):
      class Meta:
          model = UsageType
          fields = "__all__"
  
  
  class UsageSerializer(serializers.ModelSerializer):
      class Meta:
          model = Usage
          fields = "__all__"
  
  
  class DataInterfaceSerializer(serializers.ModelSerializer):
      class Meta:
          model = DataInterface
          fields = "__all__"
  