ES6 - What do function parameter lists inside of curly braces do in es6?

http://stackoverflow.com/questions/37661166/what-do-function-parameter-lists-inside-of-curly-braces-do-in-es6/37661289

const func = ({ param1, param2 }) => {

    //do stuff

}

It is destructuring, but contained within the parameters. The equivalent without the destructuring would be:

const func = o => {
    var param1 = o.param1;
    var param2 = o.param2;
    //do stuff
}

It is basically shorthand for {param1: param1, param2: param2}