savePosition ()
        Class:
        Marker
      
    Planit likes to save values within data attributes on the marker. This method saves the current position (by calling position()) in data-xpc and data-ypc attributes on the marker's container.
It returns the coordinates to you.
Returns: Array of coordinates as [xPc, yPc]
Example
// assuming you already have access to `marker` as a Marker object
marker.savePosition()