Parses version and model information out of 'show version' output
        and uses the output to populate class properties.

def _get_version_properties(self):
        """Parses version and model information out of 'show version' output
        and uses the output to populate class properties.
        """
        # Parse out version info
        output = self.enable('show version')
        self._version = str(output[0]['result']['version'])
        match = re.match('[\d.\d]+', output[0]['result']['version'])
        if match:
            self._version_number = str(match.group(0))
        else:
            self._version_number = str(output[0]['result']['version'])
        # Parse out model number
        match = re.search('\d\d\d\d', output[0]['result']['modelName'])
        if match:
            self._model = str(match.group(0))
        else:
            self._model = str(output[0]['result']['modelName'])