Adds a line segment to the path from the current point to the beginning of the current sub-path, (the most recent point passed to Paint.MoveTo), and closes this sub-path. After this call the current point will be at the joined endpoint of the sub-path.

The behavior of Paint.ClosePath is distinct from simply calling Paint.LineTo with the equivalent coordinate in the case of stroking. When a closed sub-path is stroked, there are no caps on the ends of the sub-path. Instead, there is a line join connecting the final and initial segments of the sub-path.

If there is no current point before the call to Paint.ClosePath, this function will have no effect.