CellContent When Cell is Blank

I’m trying to write a condition for when a cell in a table is blank. Since there is not .isBlank in tables, I wanted to write:

when table1.cellContent(1,1)=

But what doed it equal when there’s nothing in the cell?

There’s an isBlank

when isBlank(table1.cellContent(1,1) )...

thanks, must have missed it in the documentation.

It’s in the Functions section. There’s also isDefined and isUndefined.