code: public DataSetBuilder random(String column, List<?> values) {
      ensureValidList(values);
      return set(column,() -> values.get(rng.nextInt(values.size())));
    }
docs: Set random filler for column using a list of values.
  
  <p>
  The specified column will be filled with values that
  are uniformly sampled from the given list.
  </p>
  
  @param column Column name.
  @param values  Values to use.
  @return The builder instance (for chained calls).
  
  @see #random(String, Object...)
  @see #sequence(String, List)