say I have draw a line chart with 5 data series. At some data points multiple series may intersect. e.g., at x=10, all the lines have a y-value of 0. When user mouse hover these overlap data points, I always want to show the tooltip from series k. That is to say, series k has a "z-index" bigger than other series. Could kendo chart provide such a parameter? I want to show some particular line always on top of other lines when overlap, as well as its tooltip.