Crossword Genius

Theresa's annoyed about revised version 22s (10)

Ross

I believe the answer is:

harvesters

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'22s' is the definition.
Although both the answer and definition are plural nouns, I can't understand how one could define the other.

'theresa's annoyed about revised version' is the wordplay.
'annoyed' indicates anagramming the letters.
'about' is an insertion indicator.
'revised version' becomes 'rv'.
'theresas' with letters rearranged gives 'haesters'.
'haesters' placed around 'rv' is 'HARVESTERS'.

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I've seen this clue in The Guardian.
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