What is replacing .then(data => console.log(data)) with just .then(console.log) called?

Question

I saw the following code in a React application.

getData()
        .then(res => res.json())
        .then(console.log)

And it behaves exactly the same as I would use

getAllStudents()
        .then(res => res.json())
        .then(data => console.log(data))

So in the first example the called function console.log somehow implicitly knows it should take the data as parameter and show it in the console. That function is not even called with console.log()

Could you please tell me what this shortcut concept is called? I would like to read more about it, but I don't know how exactly I should use it.