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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 _os_release_info(self):
 """ Get the information items from the specified os-release file. Returns: A dictionary containing all information items. """

        if os.path.isfile(self.os_release_file):
            with open(self.os_release_file) as release_file:
                return self._parse_os_release_content(release_file)
        return {}