public static ValueUpdate createDivide(Number divisor) {
        return new ArithmeticValueUpdate(ArithmeticValueUpdate.Operator.DIV, divisor);
    }
Creates a new value update that divides a value. Note that the data type must be a numeric
type.

@param divisor the number to divide by
@return a ValueUpdate specifying the division
@throws UnsupportedOperationException if the data type is non-numeric
document/src/main/java/com/yahoo/document/update/ValueUpdate.java