Async arrow functions look like this:
const foo = async () => { // do something }
Async arrow functions look like this for a single argument passed to it:
const foo = async evt => { // do something with evt }
Async arrow functions look like this for multiple arguments passed to it:
const foo = async (evt, callback) => { // do something with evt // return response with callback }
The anonymous form works as well:
const foo = async function() { // do something }
An async function declaration looks like this:
async function foo() { // do something }
Using async function in a callback:
const foo = event.onCall(async () => { // do something })
Using async method inside of a class:
async foo() { // do something }
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