What is nextobjectid for?

Hello!

I haven’t use Tiled in a little while and noticed a new “nextobjectid” property in the JSON output.
Can anyone explain what nextobjectid should be used for?

Thank you!

That one is only there to save the next id which will be assigned to the
next object created. It is there to prevent duplicate ids. It is only
really required by tiled itself.

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Thank you!