After change of heart, shut up like this (4)

I believe the answer is:

thus

I'm a little stuck... Click here to teach me more about this clue!

'like this' is the definition.
(I've seen this before)

'after change of heart shut up' is the wordplay.
'shut' anagrams to 'THUS'.
Though, I am not sure how this is indicated.

Can you help me to learn more?

(Other definitions for thus that I've seen before include "It follows" , "Like so" , "as indicated" , "an original Christmas gift" , "Shut (anag.)" .)

I've seen this clue in The Times.

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