doc: add samples for filtering using async apis #1051

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Run time

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Job	Run time
unit (3.7)	1m 17s
unit (3.8)	1m 13s
unit (3.9)	1m 13s
unit (3.10)	1m 16s
unit (3.11)	1m 12s
unit (3.12)	1m 26s
cover	41s
	8m 18s