function getContexts(assert, oBinding, iStart, aExpectedIDs, bExpectMore = false) {
			// code under test
			const aContexts = oBinding.getContexts(iStart, 2, 4);

			assert.deepEqual(aContexts.map((oContext) => oContext?.getProperty("SalesOrderID")), aExpectedIDs,
				`contexts ${iStart}`);
			assert.strictEqual(aContexts.bExpectMore, bExpectMore, `bExpectMore ${iStart}`);
		}
Calls getContexts with length 2 and prefetch 4 at the binding and checks the response.

@param {object} assert The QUnit assert object
@param {sap.ui.model.odata.v2.ODataListBinding} oBinding The binding
@param {number} iStart The start index
@param {number[]} aExpectedIDs The expected IDs in the returned contexts
@param {boolean} bExpectMore Whether to expect more contexts