Sentence examples similar to provided it's not essential from inspiring English sources

But it's not essential.

It's not essential.

It is not essential to provide your national insurance (NI) number when registering to vote.

It is not essential that you provide a full bar.

But it is not essential.

It is not essential to it.

It is not essential for meditation.

It is not essential in E. coli.

The second clause provides extra information, and it isn't essential to the first clause.

That's a good thing in the sense that people who are covered can afford to get the care they need, but it also increases the incentive for patients to seek (and for doctors to provide) care that's not essential, while diminishing the incentive to stay healthy.

What's not essential?