* @param {Object|string} [uri] URI string, or an Object with appropriate properties (especially
* another URI object to clone). Object must have non-blank `protocol`, `host`, and `path`
* properties. If omitted (or set to `undefined`, `null` or empty string), then an object
* @param {Object|string} [uri] URI string, or an Object with appropriate properties (especially
* another URI object to clone). Object must have non-blank `protocol`, `host`, and `path`
* properties. If omitted (or set to `undefined`, `null` or empty string), then an object