module mod_1 {

	namespace "urn:cesnet:mod_1";

	prefix cesnet;

	yang-version 1;

	revision 2016-09-09 {

		reference text;

	}

	revision 2016-08-08 {

		description "leaf { type string; }";

	}

	grouping mod {

		container mccc {

			typedef abc {

				type string {

					pattern '[a-zA-Z]+[0-9]*';

				}

			}

			leaf aa {

				type abc;

			}

		}

	}

	typedef mod_aa {

		type enumeration {

			enum aaa;

			enum bbb;

			enum ccc;

		}

	}

}