Appium Dot Net Driver Execute

I am attempting to use Image Comparison I found in the GitHub appium dot net driver for C# users but I can’t implement the Execute Method here is the exact line:
var result = Execute(AppiumDriverCommand.CompareImages, parameters);
Anyone know whats the least amount of code I could use to get Execute like they are using up and running? I tried taking the entire class but very little of the code works with my solution.