Promise (Grails Async Framework

Encapsulates the notion of a Promise, a Future-like interface designed to easy integration of asynchronous functions
Authors:
Graeme Rocher
Since:
2.3

Methods
Type Params	Return Type	Name and description
	`Promise<T>`	`accept(T value)` Assigns a value to an unfulfilled promise
	`Promise<T>`	`onComplete(groovy.lang.Closure callable)` Execute the given closure when the promise completes
	`Promise<T>`	`onError(groovy.lang.Closure callable)` Execute the given closure when an error occurs
	`Promise<T>`	`then(groovy.lang.Closure callable)` Same as #onComplete

Inherited Methods
Methods inherited from class	Name
`interface java.util.concurrent.Future`	`java.util.concurrent.Future#isCancelled(), java.util.concurrent.Future#isDone(), java.util.concurrent.Future#get(), java.util.concurrent.Future#get(long, java.util.concurrent.TimeUnit), java.util.concurrent.Future#cancel(boolean)`
`class java.lang.Object`	`java.lang.Object#wait(long, int), java.lang.Object#wait(long), java.lang.Object#wait(), java.lang.Object#equals(java.lang.Object), java.lang.Object#toString(), java.lang.Object#hashCode(), java.lang.Object#getClass(), java.lang.Object#notify(), java.lang.Object#notifyAll()`

[Groovy] Interface Promise<T>