Method testModuleRef

packages/core/testing/src/test_bed.ts:748–753

* @internal strip this from published d.ts files due to * https://github.com/microsoft/TypeScript/issues/36216

()

   * https://github.com/microsoft/TypeScript/issues/36216
   */
  private get testModuleRef(): NgModuleRef<any> {
    if (this._testModuleRef === null) {
      this._testModuleRef = this.compiler.finalize();
    }
    return this._testModuleRef;
  }

  private assertNotInstantiated(methodName: string, methodDescription: string) {
    if (this._testModuleRef !== null) {