Allow to return an empty value from a formula

Sometimes, when using a formula field that returns a single entity, the user might want to return an empty value (meaning no entity).

For example, if (X is true return entity Y, else return nothing)

There is a workaround for this, which is taking a collection of entities of the type returned and applying to it Collection.Filter(true = false).Sort(Some Field).First() which returns the first entity in an empty list (which is an empty value), but this is rather awkward.

Related:

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And related to that :

I think this is a prety important feature I come by quite often and must use workarounds.

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