code: function(oTable, sColumnId, iLevel) {
  			var oColumnMapItem = TableColumnUtils.getColumnMapItem(oTable, sColumnId);
  			if (!oColumnMapItem) {
  				return undefined;
  			}
  
  			var aParents = [];
  			for (var i = 0; i < oColumnMapItem.parents.length; i++) {
  				var oParent = oColumnMapItem.parents[i];
  				if (iLevel === undefined || oParent.level === iLevel) {
  					aParents.push(oParent);
  				}
  			}
  
  			return aParents;
  		}
docs: Returns an array of the column information about all columns which span the column identified by sColumnId.
  If there is no "parent", it returns undefined.
  
  @param {sap.ui.table.Table} oTable Instance of the table.
  @param {string} sColumnId ID of the column for which the Span-parent shall be found.
  @param {int} [iLevel] Level where the parent is looked up.
  @returns {Array.<{column: sap.ui.table.Column, level: int}>|undefined} Array of column information.