def to_a
      assert_exists
      # @object.getRows.map do |table_row|
      #   table_row.getCells.map { |td| td.asText.strip }
      # end
      rows.map do |table_row|
        table_row.map { |td| td.text }
      end
    end
def to_a
      assert_exists
      # @object.getRows.map do |table_row|
      #   table_row.getCells.map { |td| td.asText.strip }
      # end
      rows.map do |table_row|
        table_row.map { |td| td.text }
      end
    end
Returns the text of each cell in the the table as a two-dimensional array.
 @return [Array<Array<String>>]