在Angular中，我正在努力设置模拟数据。我有以下2个类：

export class Company {

  public id: number;
  public name: string;
  public applications: Application[];

  constructor(id: number, name: string, applications: Application[]) {
    this.id = id;
    this.name = name;
    this.applications = applications;
  }
}

export class Application {

  public id: number;
  public name: string;
  public company: Company;

  constructor(id: number, name: string, company: Company) {
    this.id = id;
    this.name = name;
    this.company = company;
  }
}

我还创建了这些服务：

export class CompanyService {

  companies = [
    new Company(
      1,
      'Company 1',
      []
    ),
    new Company(
      2,
      'Company 2',
      [],
    ),
  ]

  constructor(private http: HttpClient) { }

  getAll(): Company[] {
    return this.companies;
  }

  findById(id: number): Company | undefined {
    return this.companies.find(company => company.id === id);
  }
}


export class ApplicationService {

  applications = [
    new Application(
      1,
      'Application 1',
      // COMPANY HERE SOMEHOW?
    ),
    new Application(
      2,
      'Application 2',
      // COMPANY HERE SOMEHOW?
    ),
  ]

  constructor(private http: HttpClient) { }

  getAll(): Application[] {
    return this.applications;
  }

  findById(id: number): Application | undefined {
    return this.applications.find(application => application.id === id);
  }
}

现在不知何故，当我创建这个mockdata时，我需要在application的构造函数中添加一个公司，但是当我在那里添加一个公司时，该对象也需要在构造函数中包含应用程序。这导致了一个鸡/蛋问题，我不确定我应该如何定义它。
我是Angular的新手，所以我不知道框架中是否有技巧可以使用，或者我应该使用类的id，但是使用id我仍然有同样的问题。有人能帮助我吗？