old_contents: """
  .. module:: dj-stripe.contrib.rest_framework.serializers.
  
      :synopsis: dj-stripe - Serializers to be used with the dj-stripe REST API.
  
  .. moduleauthor:: Philippe Luickx (@philippeluickx)
  
  """
  
  from rest_framework import serializers
  from rest_framework.serializers import ModelSerializer
  
  from djstripe.models import Subscription
  
  
  class SubscriptionSerializer(ModelSerializer):
      """A serializer used for the Subscription model."""
  
      class Meta:
          """Model class options."""
  
          model = Subscription
          exclude = ["default_tax_rates"]
  
  
  class CreateSubscriptionSerializer(serializers.Serializer):
      """A serializer used to create a Subscription."""
  
      stripe_token = serializers.CharField(max_length=200)
      plan = serializers.CharField(max_length=50)
      charge_immediately = serializers.NullBooleanField(required=False)
      tax_percent = serializers.DecimalField(
          required=False, max_digits=5, decimal_places=2
      )
  
new_contents: """
  .. module:: dj-stripe.contrib.rest_framework.serializers.
  
      :synopsis: dj-stripe - Serializers to be used with the dj-stripe REST API.
  
  .. moduleauthor:: Philippe Luickx (@philippeluickx)
  
  """
  
  from rest_framework import serializers
  from rest_framework.serializers import ModelSerializer
  
  from djstripe.models import Subscription
  
  
  class SubscriptionSerializer(ModelSerializer):
      """A serializer used for the Subscription model."""
  
      class Meta:
          """Model class options."""
  
          model = Subscription
          exclude = ["default_tax_rates"]
  
  
  class CreateSubscriptionSerializer(serializers.Serializer):
      """A serializer used to create a Subscription."""
  
      stripe_token = serializers.CharField(max_length=200)
      plan = serializers.CharField(max_length=50)
      charge_immediately = serializers.BooleanField(required=False, allow_null=True, default=None)
      tax_percent = serializers.DecimalField(
          required=False, max_digits=5, decimal_places=2
      )
  
subject: Remove deprecated NullBooleanField