[value]
) Completes future with the supplied values.
The value must be either a value of type T
or a future of type Future<T>.
If the value is itself a future, the completer will wait for that future to complete, and complete with the same result, whether it is a success or an error.
Calling complete or completeError must not be done more than once.
All listeners on the future are informed about the value.
Source
/**
* Completes [future] with the supplied values.
*
* The value must be either a value of type [T]
* or a future of type `Future<T>`.
*
* If the value is itself a future, the completer will wait for that future
* to complete, and complete with the same result, whether it is a success
* or an error.
*
* Calling `complete` or [completeError] must not be done more than once.
*
* All listeners on the future are informed about the value.
*/
void complete([value]);