public static String buildId(String name, boolean isNormal) {
            if (StringUtil.isBlank(name)) {
                name = Const.BLANK_ENTITY_NAME;
            }
            return encode(name) + Const.SERVICE_ID_CONNECTOR + BooleanUtils.booleanToValue(isNormal);
        }
@param name     service name
@param isNormal `true` represents this service is detected by an agent. `false` represents this service is
                conjectured by telemetry data collected from agents on/in the `normal` service.
oap-server/server-core/src/main/java/org/apache/skywalking/oap/server/core/analysis/IDManager.java