--- /dev/null
+module main-model {
+ yang-version 1;
+ namespace "main-model";
+ prefix "main";
+
+ import extension-model { prefix "ex"; }
+
+ revision "2020-08-13" { }
+
+ container root-contaner {
+ leaf leaf1 {
+ type string;
+ ex:custom-ex;
+ }
+ }
+}
+