public static <T> ToDouble<T> pow(ToInt<T> expression, double power) {
        return PowUtil.intPowDouble(expression, power);
    }
Creates and returns an expression that takes the result of an input
expression and multiplies it with itself {@code power} times.

@param expression  the input expression
@param power       the power
@param <T>         the input type
@return            the new expression
runtime-parent/runtime-compute/src/main/java/com/speedment/runtime/compute/expression/Expressions.java