+ *
+ * @file
+ * API to retrieve the current network size estimate
+ *
+ * @defgroup nse NSE service
+ * Network Size Estimation
+ *
+ * Provides an API to retrieve the current network size estimate,
+ * also to register for notifications whenever a new
+ * network size estimate is calculated.
+ *
+ * @see [Documentation](https://gnunet.org/gnunet-nse-subsystem)
+ *