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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 fstat(self, file_des):
 """Return the os.stat-like tuple for the FakeFile object of file_des. Args: file_des: The file descriptor of filesystem object to retrieve. Returns: The FakeStatResult object corresponding to entry_path. Raises: OSError: if the filesystem object doesn't exist. """

        # stat should return the tuple representing return value of os.stat
        file_object = self.filesystem.get_open_file(file_des).get_object()
        return file_object.stat_result.copy()