Return parsed data. Parse it if not already parsed.

        Returns:
            list: list of dictionaries (one for each parsed line).

def content(self):
        """
        Return parsed data. Parse it if not already parsed.

        Returns:
            list: list of dictionaries (one for each parsed line).
        """
        if self._content is None:
            self._content = self.parse_files()
        return self._content