Return a list of count elements of the container uniformly at
random using the generator. The sampling is done _with_ replacement.
| sample-elements < > < cl-variates:basic-random-number-generator > < integer > |
| sample-elements < list > < cl-variates:basic-random-number-generator > < integer > |
| sample-elements < t > < cl-variates:random-number-generation-mixin > < integer > |