def get(self, section, option, **kwargs):
try:<EOL><INDENT>ret = super(ExactOnlineConfig, self).get(section, option, **kwargs)<EOL><DEDENT>except (NoOptionError, NoSectionError):<EOL><INDENT>raise MissingSetting(option, section)<EOL><DEDENT>return ret<EOL>
Get method that raises MissingSetting if the value was unset.

This differs from the SafeConfigParser which may raise either a
NoOptionError or a NoSectionError.

We take extra **kwargs because the Python 3.5 configparser extends the
get method signature and it calls self with those parameters.

    def get(self, section, option, *, raw=False, vars=None,
            fallback=_UNSET):