def parse_section_extras_require(self, section_options):
        """Parses `extras_require` configuration file section.

        :param dict section_options:
        """
        parsed = self._parse_section_to_dict_with_key(
            section_options,
            lambda k, v: self._parse_requirements_list(f"extras_require[{k}]", v),
        )

        self['extras_require'] = parsed
Parses `extras_require` configuration file section.

        :param dict section_options:
        
product/gradle-plugin/src/main/python/setuptools/config/setupcfg.py