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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_included_resources(request, serializer=None):
 """ Build a list of included resources. """

    include_resources_param = request.query_params.get('include') if request else None
    if include_resources_param:
        return include_resources_param.split(',')
    else:
        return get_default_included_resources_from_serializer(serializer)