Main parsing class method which stores all interesting data from the content.

        Args:
            content (context.content): Parser context content

def parse_content(self, content):
        """
        Main parsing class method which stores all interesting data from the content.

        Args:
            content (context.content): Parser context content
        """
        # note, the Parser class sets:
        # * self.file_path = context.path and
        # * self.file_name = os.path.basename(context.path)
        self.active_lines_unparsed = get_active_lines(content) if content is not None else []
        #  (man page shows all options with "=")
        self.active_settings = split_kv_pairs(content, use_partition=False) if content is not None else []