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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 get(self, path):
 """ Get a file from the filesystem. Returns a SimFile or None. """

        mountpoint, chunks = self.get_mountpoint(path)

        if mountpoint is None:
            return self._files.get(self._join_chunks(chunks))
        else:
            return mountpoint.get(chunks)