如何使用Google Map SDK for iOS在myift中使用myLocation？

I am making a single view application in Xcode, with Google Map SDK. I have followed instructions online and my application can successfully load the google map view. I also enabled myLocation, so that myLocation button shows on the map view. I understand that clicking the myLocation button will change the camera location automatically, but I'm wondering what I should do to use the data of myLocation (say to add a marker or add a path node)?I am making a single view application in Xcode,