Loose refrigerator :(

[Weekendcamper]

We have a 2015 3100 RL Montana. Upon returning home from a campout the top our refrigerator had come loose from it's "mounting" and was tilted away from the wall about 3". I easily pushed it back in place but I have no understanding of how the unit is secured to the surrounding cabinetry. Does anyone have an idea or can help me understand how the refrigerator is installed and secured? Thanks!