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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 ftp_proxy(self, value):
 """ Sets ftp proxy setting. :Args: - value: The ftp proxy value. """

        self._verify_proxy_type_compatibility(ProxyType.MANUAL)
        self.proxyType = ProxyType.MANUAL
        self.ftpProxy = value