stupid question, but is it possible to add hmm.. n...

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[ghedeon]

stupid question, but is it possible to add hmm.. nothing to collection?))
Let say you transform your collection in a fluent manner and want to add an element under a certain condition:

list.add(if (condition) foo else bar)

this works, because else is present, but what if I don't want to add anything when condition is false?