titleColumnSpan property
Indicates how many columns should be spanned for GridTableSummaryRow.title.
This is applicable only if the GridTableSummaryRow.showSummaryInRow is false.
If GridTableSummaryRow.titleColumnSpan value is greater than 0, then the GridTableSummaryRow.title will be rendered along with summary values as defined through summary columns.
Implementation
final int titleColumnSpan;