Evaluates the Money Flow Index (MFI) which measures the strength of money flowing
in and out of a security over all periods for which sufficient data is provided.
- An series where the first element is the high in the last trading period, the second term is
the high in the previous period and so on.
- An integer which represents the length of the period over which the indicator
will be iteratively evaluated.
|ArgumentException||Thrown if any elements from the arrays high, low, close or volume
are strictly negative, or if the length of the arrays is not equal or the lengthOfPeriod is grater than the
length of the array high.|