code: function registerDebugInfo( debugInfo ) {
        if( typeof debugInfo === 'function' ) {
           loadDebugInfo = debugInfo;
        }
        else {
           loadDebugInfo = callback => { callback( debugInfo ); };
        }
  
        whenDebugInfoAvailable();
     }
docs: ///////////////////////////////////////////////////////////////////////////////////////////////////////// 
  Register a debug info object or callback with the tooling instance. Debug information can be generated
  with `laxar-loader/debug-info` and may be in the form a function accepting a callback.
  If debug information is needed, the function will be called to load it asynchronously.
  
  @param {Object|Function} debugInfo
  a debug information callback or object
  @memberof AxTooling