Vernalis: Collection Size - Add Option to ignore missing

Hi @Vernalis,

I was wondering if it would be possible to add an option to exclude counting missing or even count the missing values only when using the Collection Size node?

The use case is, when creating a List or set with missing values to ensure after ungrouping all ends up in the right spot again, I want to quickly check without ungrouping if there are any missing values and then maybe discard them all together / reprocess.

Best

Mike