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// Creates a filter for all documents that have a "cuisine" value of "Pizza"
var filter = Builders<Restaurant>.Filter
    .Eq(r => r.Cuisine, "Pizza");
// Asynchronously retrieves all documents that match the filter
return await _restaurantsCollection.Find(filter).ToListAsync();

// Creates a filter for all documents that have a "cuisine" value of "Pizza"
var filter = Builders<Restaurant>.Filter
    .Eq("cuisine", "Pizza");
// Retrieves all documents that match the filter
return _restaurantsCollection.Find(filter).ToList();

return await _restaurantsCollection.AsQueryable()
    .Where(r => r.Cuisine == "Pizza").ToListAsync();

return _restaurantsCollection.AsQueryable()
    .Where(r => r.Cuisine == "Pizza").ToList();

var filter = Builders<Restaurant>.Filter.Empty;
return await _restaurantsCollection.Find(filter)
    .ToListAsync();

var filter = Builders<Restaurant>.Filter.Empty;
return _restaurantsCollection.Find(filter)
    .ToList();