Returns a single asynchronous Promise instance that is already resolved with the given value. If the value passed is
a promise then that promise is returned instead of creating a new asynchronous promise instance.
If a new instance is returned then any chained operations will execute asynchronously using the optional
timeout value to schedule when the chained items will be executed.(eg. then(); finally()).
Returns a single asynchronous Promise instance that is already resolved with the given value. If the value passed is a promise then that promise is returned instead of creating a new asynchronous promise instance. If a new instance is returned then any chained operations will execute asynchronously using the optional timeout value to schedule when the chained items will be executed.(eg.
then();finally()).