how to use GetNextDiscontinuity?

So I want to check whether a curve is "kinky" or a continuous using VB script.  I think that I need to use GetNextDiscontinuity, but I am unsure of exactly what it does.  My current understanding (or lack thereof):

x is a curve
x.GetNextDiscontinuity(???????continuity????, min domain, max domain, index of discontinuity)

I have no idea what the first term represents.  Min and max domain set the interval of the curve to check for discontinuities.  If it finds a discontinuity in this interval then it returns the first discontinuity index that it encounters to "index of discontinuity." 

If someone could clear this up for me I would greatly appreciate it.  I would also like to be able to extract the total number of discontinuities on a line and their points, similar to the "Discontinuity" component.