code: @SafeVarargs
    public final <T> DataSetBuilder random(String column, T... values) {
      ensureValidArray(values);
      return set(column, () -> values[rng.nextInt(values.length)]);
    }
docs: Set random filler for column using an array of values.
  
  <p>
  The specified column will be filled with values that
  are uniformly sampled from the given array.
  </p>
  
  @param <T> Type of data.
  @param column Column name.
  @param values  Values to use.
  @return The builder instance (for chained calls).
  
  @see #random(String, List)
  @see #sequence(String, Object...)