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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 cmd_fw_manifest(self, args):
        '''cmd handler for manipulating manifests'''
        if len(args) == 0:
            print(self.fw_manifest_usage())
            return
        rest = args[1:]
        if args[0] == "download":
            return self.manifest_download()
        if args[0] == "list":
            return self.cmd_fw_manifest_list()
        if args[0] == "load":
            return self.cmd_fw_manifest_load()
        if args[0] == "purge":
            return self.cmd_fw_manifest_purge()
        if args[0] == "help":
            return self.cmd_fw_manifest_help()
        else:
            print("fw: Unknown manifest option (%s)" % args[0])
            print(fw_manifest_usage())