Add validators with parameters
The is method and its aliases accept a second parameter which may
be a single value or an array of parameters for the validation. Note that not
all validators accept parameters.
"name".has("min-length", 4);
You can also express the above with an array for parameters, however, this only makes sense when the validator accepts more than one parameter. Below is an example of a hypothetical length range validator:
"name".has("length-range", [4, 12]);