How to access a static variable from a generic class?

I have many class with their static variables, like this:

user.ts:

export class User {
  static modelKey = 'user';

  // other variables
}

car.ts:

export class Car {
  static modelKey = 'car';

  // other variables
}

And somewhere I want just call the DataSource (see below) like this:

const dataSource = new DataSource<Car>();

data-source.ts:

export class DataSource<T> {

  constructor() {
    console.log(T.modelKey); // won't compile
  }  
}

Of course, it won't compile because I can't simple use T.<variable>. So, my question is: how can I accomplish this?

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