applyChange(oManifest, oChange) {
			if (!oChange.getContent().hasOwnProperty("abstract")) {
				throw new Error("No abstract in change content provided");
			}

			if (oChange.getContent().abstract !== false) {
				throw new Error(`The current change value of property abstract is '${oChange.getContent().abstract}'. Only allowed value for property abstract is boolean 'false'`);
			}

			ObjectPath.set(["sap.fiori", "abstract"], oChange.getContent().abstract, oManifest);
			return oManifest;
		}
Method to apply the <code>appdescr_fiori_setAbstract</code> change to the manifest.
@param {object} oManifest - Original manifest
@param {sap.ui.fl.apply._internal.flexObjects.AppDescriptorChange} oChange - Change with type <code>appdescr_fiori_setAbstract</code>
@param {object} oChange.content - Details of the change
@param {boolean} oChange.content.abstract - Boolean flag (only allowed value is <code>false</code>)
@returns {object} Updated manifest with changed <code>appdescr_fiori_setAbstract</code>

@private
@ui5-restricted sap.ui.fl.apply._internal