Implement entity function

[Shroobz]

Problem

There are functions to get players and offline players from a uuid, but not for other entities. Having one would also make it easier to convert a uuid to an entity.

Solution

Added a new function entity(UUID) which returns the entity with the given uuid

Testing Completed

Quicktest and a bit of manual testing were done (the manual testing was mostly just "broadcast entity(uuid of last spawned entity)")

Supporting Information

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Completes: #8488
Related: none
AI assistance: none

[sovdeeth]

Needs better description (note things like entities having to be loaded), more and better examples (use it in an actively useful way), and null handling in case the arg was an unset var, for example

Also automated tests would be helpful if feasible

[Shroobz]

Needs better description (note things like entities having to be loaded), more and better examples (use it in an actively useful way), and null handling in case the arg was an unset var, for example

Also automated tests would be helpful if feasible

I don't get what you mean with null handling, in testing the function just didn't run if there wasn't a valid uuid:

And if there's no entity with a given uuid, Bukkit.getEntity just returns null anyway. (I ended up adding a null check anyway).

[sovdeeth]

Ah , I would have expected a NPE if you pass null to getEntity. The null check is good practice anyway, so looks good. Will review tomorrow

[Efnilite]

Ah , I would have expected a NPE if you pass null to getEntity. The null check is good practice anyway, so looks good. Will review tomorrow

Any argument being null while not being marked as optional results in any DefaultFunction returning null, so it's not actually necessary

[sovdeeth]

Ah , I would have expected a NPE if you pass null to getEntity. The null check is good practice anyway, so looks good. Will review tomorrow

Any argument being null while not being marked as optional results in any DefaultFunction returning null, so it's not actually necessary

Oh right, forgot you updated that

[sovdeeth]

when i said better examples i mean giving actual examples of uuids, using a literal string, or things like that, rather than just handwaving {uuid} each time.