text: var caches = {};
  
  function createCache() {
      var cache = {};
  
      return {
          get: function (cacheKey, options, callback) {
              setTimeout(function () {
                  var value = cache[cacheKey];
                  if (value !== undefined) {
                      return callback(null, value);
                  }
  
                  var builder = options.builder;
                  builder(function (err, value) {
                      if (err) {
                          return callback(err);
                      }
  
                      if (value === undefined) {
                          value = null;
                      }
  
                      cache[cacheKey] = value;
  
                      callback(null, value);
                  });
              }, 10);
          }
      };
  }
  
  var myCacheManager = {
      getCache: function (cacheName) {
          return caches[cacheName] || (caches[cacheName] = createCache());
      }
  };
  
  exports.templateData = {
      myCacheManager: myCacheManager
  };