isCustomerSystem() {
			const oSettings = Settings.getInstanceOrUndef();
			const sSystemType = oSettings?.getSystemType();
			const bIsCustomerSystem = {
				CUSTOMER: true,
				SAP: false
			}[sSystemType];
			const sHostname = this._getHostname();

			return bIsCustomerSystem !== undefined
				? bIsCustomerSystem
				// Fallback if back end has no info, guess based on hostname
				: !(
					sHostname === "localhost"
					|| sHostname === "127.0.0.1"
				);
		}
Checks if the Settings are available and if so returns if the system is a customer system

@returns {boolean} A boolean that indicates if the system is a customer system
@private
@ui5-restricted sap.ui.rta