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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 cache_memlimit(self, memlimit):
 """ The memcached "cache_memlimit" command. Args: memlimit: int, the number of megabytes to set as the new cache memory limit. Returns: If no exception is raised, always returns True. """


        self._fetch_cmd(b'cache_memlimit', [str(int(memlimit))], False)
        return True