hope to keep it going for ages yet


Mark walks into his apartment building heading to the stairs when his first-floor neighbour walks out and invites him to her birthday party going on right now:
— Please come in. You'll meet the others who live here and...
— Sorry, but... work.
— Oh, well, I hope to keep it going for ages yet, so when you finish, why not look in...

Peeping Tom, film

Could you explain to me this phrase?
Thank you.
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