_prepareContext(req, res, next) {
        res.routerOptions = {
            type: 'channel',
            name: this.taxonomyKey,
            permalinks: this.permalinks.getValue(),
            data: {[this.taxonomyKey]: this.RESOURCE_CONFIG.QUERY[this.taxonomyKey]},
            filter: this.RESOURCE_CONFIG.TAXONOMIES[this.taxonomyKey].filter,
            resourceType: this.getResourceType(),
            context: [this.taxonomyKey],
            slugTemplate: true,
            identifier: this.identifier
        };

        next();
    }
@description Prepare context for routing middleware/controllers.
@param {Object} req
@param {Object} res
@param {Function} next
@private