serializers.Serialiser MethodField не могу получить внутри метода данные

class GenderSerializer(serializers.Serializer):
    name = serializers.SerializerMethodField()

    def get_name(self, obj):
        print("------------------")
        print(obj)
        print("------------------")
        
        return "aaa"
        # return _(obj.name)

serializer_gender = GenderSerializer(data=[{'id': 1, 'name': 'GENDER_MAN'}, {'id': 2, 'name': 'GENDER_WOMAN'}], many=True)
serializer_gender.is_valid(raise_exception=True)

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{}
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{}
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