code: function forItem( { instance, item } ) {
        const key = `${instance}.${item}`;
        if( !(key in itemListeners) ) {
           log.warn( `LaxarJS tooling: Not enabled for bootstrap item '${item}' in instance '${instance}'` );
           return createToolingApi( [] );
        }
  
        const api = createToolingApi( itemListeners[ key ] );
        addPagesTooling( api );
        return api;
     }
docs: ///////////////////////////////////////////////////////////////////////////////////////////////////////// 
  Get an {@link #AxTooling} interface for the given bootstrapping item.
  
  @param {ItemMeta} itemMeta
  an object identifying the bootstrapping item
  @return {AxTooling}
  a tooling API for the given bootstrapping item
  @memberof AxTooling