Fix #50

[kevinresol]

No description provided.

[kevinresol]

Still not perfect, for var(get, never) in abstract we get this:

export declare class Future_Impl_ {
	static readonly status: FutureStatus<T>
	protected static get_status<T>($this: FutureObject<T>): FutureStatus<T>
}

I think we should skip the generation of the var itself, but expose the getter instead.