code: @Deprecated
      public void setTemplateHandler(TemplateHandler templateHandler) {
          IdentityTemplateLibrary lib = templateHandler.toIdentityTemplateLibrary();
          lib.add(identityLibrary);
          identityLibrary = lib; // new ones take priority
      }
docs: Sets the templateHandler attribute of the StructureDiagramGenerator object
  
  @param templateHandler The new templateHandler value
  @deprecated substructure templates are no longer used for layout but those provided here
  will be converted to identity templates