Selecting last row of table

I'm trying to select the last row in a table. The tables will have a different number of rows, so I cannot select based on a row number. I tried using the location options, but get an error that "The Object is not a function." Not sure what the problem is.

table = app.selection[0];if (table.hasOwnProperty("baseline")) table = table.parent;if (table instanceof Cell) table = table.parent;if (table instanceof Column) table = table.parent;if (table instanceof Row) table = table.parent;if (table instanceof Table) {            table.rows(LocationOptions.AT_END).cells.texts.everyItem().fontStyle = "regular";}

Can you use the location options for this?