code: function createInjector(defType, parent, additionalProviders) {
      if (parent === void 0) { parent = null; }
      if (additionalProviders === void 0) { additionalProviders = null; }
      parent = parent || getNullInjector();
      return new R3Injector(defType, additionalProviders, parent);
  }
docs: Create a new `Injector` which is configured using a `defType` of `InjectorType<any>`s.
  
  @experimental