temp.yang

 module openconfig-catalog-types {
   yang-version "1";
   // namespace
   namespace "http://openconfig.net/yang/catalog-types";
   prefix "cat-types";
   // import some basic types
   // meta
   organization "OpenConfig working group";
   contact
     "OpenConfig working group
     www.openconfig.net";
   description
     "This module defines types and identities used by the OpenConfig
     YANG module catalog model.";
   revision "2015-10-18" {
     description
     "Initial revision";
     reference "TBD";
   }
   // extension statements
   // feature statements
   // identity statements
   identity implementation-status-type {
     description
       "Indications of the status of a module's implementation on a
       device or server";
   }
   identity in-progress {
     base implementation-status-type;
     description
         "Implementation is in progress";
   }
   // typedef statements
   typedef yang-model-publisher 
   {
     type enumeration {
       enum "standards";
       enum "commercial";
       enum "forum";
     }
   }
   // grouping statements
   // data definition statements
   // augment statements
   // rpc statements
   // notification statements
 }