function isGroupHeader(iIndex) {
				const oContext = aContexts[iIndex];
				return (oContext && oContext.__groupInfo && oContext.__groupInfo.groupHeader) === true;
			}
Initializes the experimental grouping for sap.ui.table.Table.

@param {sap.ui.table.Table} oTable Instance of the table.
@deprecated As of version 1.118.