code: function() {
                  // Caching and cache busting
                  var cache = {};
  
                  lib.each(this.loaders, function(loader) {
                      if (typeof loader.on === 'function') {
                          loader.on('update', function(template) {
                              cache[template] = null;
                          });
                      }
                  });
  
                  this.cache = cache;
              }
docs: ... 待分析