code: function () {
              var self = this,
                  normalizedRequires,
                  normalizedRequiresStatus = self.normalizedRequiresStatus,
                  status = self.status,
                  requires = self.requires;
              if (!requires || requires.length == 0) {
                  return requires || [];
              } else if ((normalizedRequires = self.normalizedRequires) &&
                  // 事先声明的依赖不能当做 loaded 状态下真正的依赖
                  (normalizedRequiresStatus == status)) {
                  return normalizedRequires;
              } else {
                  self.normalizedRequiresStatus = status;
                  return self.normalizedRequires =
                      Utils.normalizeModNames(self.runtime, requires, self.name);
              }
          }
docs: Get module names required by this module
  @return {KISSY.Loader.Module[]}