How to Mock IMongoCollection.Find using Moq

I am struggling in mocking IMongoCollection.Find method using Moq for my unit tests.

What I tried:

  Mock<IMongoCollection<Person>> mockIMongoCollection = new Mock<IMongoCollection<Person>>();
  mockIMongoCollection.SetupAllProperties();
  mockIMongoCollection
            .Setup(x => x.Find(
                It.IsAny<FilterDefinition<Person>>(),
                It.IsAny<FindOptions>()))
            .Returns();

The thing is whatever I try to return using Returns(), it is not working, I expect to be able to return something convertible to List<Person> and I can't mock or create an instance of IFindFluent<Person,Person> as suggested by return type of Find method.