given() with a completion block

[Jordhan Leoture]

• I have read the CONTRIBUTING.

🚀 Describe the feature you'd like

given(mock) {
$0.doSomething().will{ }
$0.doOtherThing().will{ }
}

🛠 Describe the implementation you've considered

A clear and concise description of any implementation solutions you've considered.

ℹ️ Other information