Sets any value on config by key or namespace key.
@method sjl.stdlib.Config#set
@param keyOrNsKey {String}
@param value {*}
@returns {sjl.stdlib.Config} - Returns self.
function (keyOrNsKey, value) {
                var self = this;
                if (sjl.isObject(keyOrNsKey)) {
                    sjl.extend.apply(sjl, [true, self].concat(sjl.argsToArray(arguments)));
                }
                else if (sjl.isString(keyOrNsKey)) {
                    sjl.autoNamespace(keyOrNsKey, self, value);
                }
                else if (sjl.isset(keyOrNsKey)) {
                    throw new TypeError(contextName + '.set only allows strings or objects as it\'s first parameter.  ' +
                        'Param type received: `' + sjl.classOf(keyOrNsKey) + '`.');
                }
                return self;
            }