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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 StatFS(self, path=None):
 """Call os.statvfs for a given list of rdf_paths. OS X and Linux only. Note that a statvfs call for a network filesystem (e.g. NFS) that is unavailable, e.g. due to no network, will result in the call blocking. Args: path: a Unicode string containing the path or None. If path is None the value in self.path is used. Returns: posix.statvfs_result object Raises: RuntimeError: if called on windows """

    if platform.system() == "Windows":
      raise RuntimeError("os.statvfs not available on Windows")

    local_path = client_utils.CanonicalPathToLocalPath(path or self.path)

    return os.statvfs(local_path)