code: public static DoubleBinding pow(final ObservableDoubleValue a, final double b) {
          return createDoubleBinding(() -> Math.pow(a.get(), b), a);
      }
docs: Binding for {@link java.lang.Math#pow(double, double)}
  
  @param   a   the base.
  @param   b   the exponent.
  @return  the value {@code a}<sup>{@code b}</sup>.