How can I showInfoWindow(); similar to Marker google map?

[queendevelopers]

 DrawMarker.getInstance(activity).draw(mMap, destination, R.drawable.ic_pin, "Arrival to " + name + ":" +
                "\nSome subtitle text"); 

Firstly, Thanks for all your hard job, I am very happy to implement this in my code but however this seems very limited. I am using above code to show the Marker Info windows but it is not shown by default, I need to click the icon. So, As per the Marker(Google API) we need to call the marker.showInfoWindow(); to show marker info without click. How can I achieve that when route is drawn on your code? Thanks.