src/sap.ui.table/src/sap/ui/table/TableGrouping.js
function(oCellRef) {
			var oInfo = TableGrouping.TableUtils.getCellInfo(oCellRef);

			if (oInfo.isOfType(TableGrouping.TableUtils.CELLTYPE.DATACELL)) {
				return oInfo.cell.parent().hasClass("sapUiTableGroupHeader");
			} else if (oInfo.isOfType(TableGrouping.TableUtils.CELLTYPE.ROWHEADER | TableGrouping.TableUtils.CELLTYPE.ROWACTION)) {
				return oInfo.cell.hasClass("sapUiTableGroupHeader");
			}

			return false;
		}
function(oCellRef) {
			var oInfo = TableGrouping.TableUtils.getCellInfo(oCellRef);

			if (oInfo.isOfType(TableGrouping.TableUtils.CELLTYPE.DATACELL)) {
				return oInfo.cell.parent().hasClass("sapUiTableGroupHeader");
			} else if (oInfo.isOfType(TableGrouping.TableUtils.CELLTYPE.ROWHEADER | TableGrouping.TableUtils.CELLTYPE.ROWACTION)) {
				return oInfo.cell.hasClass("sapUiTableGroupHeader");
			}

			return false;
		}
function ( oCellRef ) { var oInfo = TableGrouping . TableUtils . getCellInfo ( oCellRef ) ; if ( oInfo . isOfType ( TableGrouping . TableUtils . CELLTYPE . DATACELL ) ) { return oInfo . cell . parent ( ) . hasClass ( "sapUiTableGroupHeader" ) ; } else if ( oInfo . isOfType ( TableGrouping . TableUtils . CELLTYPE . ROWHEADER | TableGrouping . TableUtils . CELLTYPE . ROWACTION ) ) { return oInfo . cell . hasClass ( "sapUiTableGroupHeader" ) ; } return false ; }
Returns whether the given cell is located in a group header.

@param {jQuery | HTMLElement} oCellRef DOM reference of table cell.
@returns {boolean} Whether the element is in a group header row.
Returns whether the given cell is located in a group header .