public void queryStartAtEndAt()

in firestore/app/src/main/java/com/google/example/firestore/DocSnippets.java [1120:1194]
41 lines of code
1 McCabe index (conditional complexity)

    public void queryStartAtEndAt() {
        // [START query_start_at_single]
        // Get all cities with a population >= 1,000,000, ordered by population,
        db.collection("cities")
                .orderBy("population")
                .startAt(1000000);
        // [END query_start_at_single]

        // [START query_end_at_single]
        // Get all cities with a population <= 1,000,000, ordered by population,
        db.collection("cities")
                .orderBy("population")
                .endAt(1000000);
        // [END query_end_at_single]

        // [START query_start_at_doc_snapshot]
        // Get the data for "San Francisco"
        db.collection("cities").document("SF")
                .get()
                .addOnSuccessListener(new OnSuccessListener<DocumentSnapshot>() {
                    @Override
                    public void onSuccess(DocumentSnapshot documentSnapshot) {
                        // Get all cities with a population bigger than San Francisco.
                        Query biggerThanSf = db.collection("cities")
                                .orderBy("population")
                                .startAt(documentSnapshot);

                        // ...
                    }
                });
        // [END query_start_at_doc_snapshot]

        // [START query_pagination]
        // Construct query for first 25 cities, ordered by population
        Query first = db.collection("cities")
                .orderBy("population")
                .limit(25);

        first.get()
            .addOnSuccessListener(new OnSuccessListener<QuerySnapshot>() {
                @Override
                public void onSuccess(QuerySnapshot documentSnapshots) {
                    // ...

                    // Get the last visible document
                    DocumentSnapshot lastVisible = documentSnapshots.getDocuments()
                            .get(documentSnapshots.size() -1);

                    // Construct a new query starting at this document,
                    // get the next 25 cities.
                    Query next = db.collection("cities")
                            .orderBy("population")
                            .startAfter(lastVisible)
                            .limit(25);

                    // Use the query for pagination
                    // ...
                }
            });
        // [END query_pagination]

        // [START multi_cursor]
        // Will return all Springfields
        db.collection("cities")
                .orderBy("name")
                .orderBy("state")
                .startAt("Springfield");

        // Will return "Springfield, Missouri" and "Springfield, Wisconsin"
        db.collection("cities")
                .orderBy("name")
                .orderBy("state")
                .startAt("Springfield", "Missouri");
        // [END multi_cursor]
    }