how can i get light estimated from the enviornment in my scene for ARkit?

i am using
Unreal engine 4.17.2

and i have heard people talking about the SLAM Technology that helps recreate the light in your AR scene using the real environment lights.
Please help me understand this if it is possible if i can use the light from the real environment instead of the lighting from unreal. That is so i can have the shadow of my object fall as the shadows in the real enviornment.