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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_queryset(self, *args, **kwargs):
 """ This mixin adds automatic prefetching for OneToOne and ManyToMany fields. """

        qs = super(AutoPrefetchMixin, self).get_queryset(*args, **kwargs)
        included_resources = get_included_resources(self.request)

        for included in included_resources:
            included_model = None
            levels = included.split('.')
            level_model = qs.model
            for level in levels:
                if not hasattr(level_model, level):
                    break
                field = getattr(level_model, level)
                field_class = field.__class__

                is_forward_relation = (
                    issubclass(field_class, ForwardManyToOneDescriptor) or
                    issubclass(field_class, ManyToManyDescriptor)
                )
                is_reverse_relation = (
                    issubclass(field_class, ReverseManyToOneDescriptor) or
                    issubclass(field_class, ReverseOneToOneDescriptor)
                )
                if not (is_forward_relation or is_reverse_relation):
                    break

                if level == levels[-1]:
                    included_model = field
                else:

                    if issubclass(field_class, ReverseOneToOneDescriptor):
                        model_field = field.related.field
                    else:
                        model_field = field.field

                    if is_forward_relation:
                        level_model = model_field.related_model
                    else:
                        level_model = model_field.model

            if included_model is not None:
                qs = qs.prefetch_related(included.replace('.', '__'))

        return qs