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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 create_cms_plugin_page(apphook, apphook_namespace, placeholder_slot=None):
 """ Create cms plugin page in all existing languages. Add a link to the index page. :param apphook_namespace: e.g.: 'foobar' :return: """

    creator = CmsPluginPageCreator(
        apphook=apphook,
        apphook_namespace=apphook_namespace,
    )
    creator.placeholder_slot = placeholder_slot
    plugin_page = creator.create()
    return plugin_page