title: Outline of polyline in Google Maps sdk for iOS
body: <p>The requirement that I have is to have a green polyline to be showed on the map. But when the map is switched to satellite view, the green polyline becomes unclear.</p>
  
  <p>I can't get the color of the polyline changed. So to distinguish the polyline from the background(Satellite view of the map), I need to draw white outline to the polyline.</p>
  
  <p>I went through the documentation of GMSPolyline class and could not find anything using which I can outline the polyline with very thin two white lines.</p>
  
  <p>Can anyone please give me suggestions as to how can I achieve this? (Without drawing/overlapping the main polyline with two boundary polylines)</p>