I'm using the AGSSketchGraphicsLayer with the geometry set to a mutable polyline to draw a connected, ordered path of coordinates points (or a "route"). I want to be able to select a specific coordinate point as the selected point programmatically. For example, when I first open a "route", I use the AGSSketchGraphicsLayer to draw the "route" as a polyline and I want to programmatically select the first point (rather than the last).
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