* creates a function which throws an implementation error

* Helper function to test operators that only work in MongoDB 3.4 and above (such as some aggregation pipeline operators) * * @param {Object} ctx, `

* Creates a function that invokes `func` with its first argument transformed. * * @private * @param {Function} func The function to wrap. * @param

* Parse the given `str` and return milliseconds. * * @param {String} str * @return {Number} * @api private

* Pluralization helper.