public void MergeFrom(UpdateCatalogRequest other)
 {
     if (other == null)
     {
         return;
     }
     if (other.catalog_ != null)
     {
         if (catalog_ == null)
         {
             Catalog = new global::Google.Cloud.Retail.V2.Catalog();
         }
         Catalog.MergeFrom(other.Catalog);
     }
     if (other.updateMask_ != null)
     {
         if (updateMask_ == null)
         {
             UpdateMask = new global::Google.Protobuf.WellKnownTypes.FieldMask();
         }
         UpdateMask.MergeFrom(other.UpdateMask);
     }
     _unknownFields = pb::UnknownFieldSet.MergeFrom(_unknownFields, other._unknownFields);
 }