findAggregation(oControl, sAggregationName) {
			return oControl?.getMetadata?.()?.getAllAggregations?.()?.[sAggregationName];
		}
Searches in the control metadata for the aggregation definition
@param {sap.ui.base.ManagedObject|Element} oControl - Control which has the aggregation
@param {string} sAggregationName - Aggregation name
@returns {object} Aggregation metadata