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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 check_arguments(cls, conf):
 """ Callback to perform sanity checking for the plugin's specific parameters. """

        # Perform sanity checking on CIDR
        utils.ip_check(conf['fixed_cidr'], netmask_expected=True)

        # Perform sanity checking on host list
        for host in conf['fixed_hosts'].split(":"):
            utils.ip_check(host)