The way of a showman (3)

I believe the answer is:

how

'the way' is the definition.
(how something is done)

'of a showman' is the wordplay.
'of' says the answer is hidden in the clue.
'HOW' can be found hidden inside 'showman'.

(Other definitions for how that I've seen before include "Who (anag.)" , "See 16" , "In what way?" , "By what means?" , "In what manner or method?" .)

I've seen this clue in the Evening Standard.

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