code: public static String generateAlias(String description, int unique) {
      return generateAliasRoot(description) +
          Integer.toString(unique) +
          '_';
    }
docs: Generate a nice alias for the given class name or collection role name and unique integer. Subclasses of
  Loader do <em>not</em> have to use aliases of this form.
  
  @param description The base name (usually an entity-name or collection-role)
  @param unique      A uniquing value
  @return an alias of the form foo1_