demo/amd/rjs/output/unified/marionette-build.js
function(name) {
          var config = this._wreqrHandlers[name];
          if (!config) {
            return;
          }
          return function() {
            return config.callback.apply(config.context, arguments);
          };
        }
function(name) {
          var config = this._wreqrHandlers[name];
          if (!config) {
            return;
          }
          return function() {
            return config.callback.apply(config.context, arguments);
          };
        }
Get the currently registered handler for the specified name. Throws an exception if no handler is found.