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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 includeme(config):
 """this function adds some configuration for the application"""

    config.add_route('references', '/references')
    _add_referencer(config.registry)
    config.add_view_deriver(protected_resources.protected_view)
    config.add_renderer('json_item', json_renderer)
    config.scan()