public void exampleData()

in firestore/app/src/main/java/com/google/example/firestore/DocSnippets.java [901:950]
43 lines of code
1 McCabe index (conditional complexity)

    public void exampleData() {
        // [START example_data]
        CollectionReference cities = db.collection("cities");

        Map<String, Object> data1 = new HashMap<>();
        data1.put("name", "San Francisco");
        data1.put("state", "CA");
        data1.put("country", "USA");
        data1.put("capital", false);
        data1.put("population", 860000);
        data1.put("regions", Arrays.asList("west_coast", "norcal"));
        cities.document("SF").set(data1);

        Map<String, Object> data2 = new HashMap<>();
        data2.put("name", "Los Angeles");
        data2.put("state", "CA");
        data2.put("country", "USA");
        data2.put("capital", false);
        data2.put("population", 3900000);
        data2.put("regions", Arrays.asList("west_coast", "socal"));
        cities.document("LA").set(data2);

        Map<String, Object> data3 = new HashMap<>();
        data3.put("name", "Washington D.C.");
        data3.put("state", null);
        data3.put("country", "USA");
        data3.put("capital", true);
        data3.put("population", 680000);
        data3.put("regions", Arrays.asList("east_coast"));
        cities.document("DC").set(data3);

        Map<String, Object> data4 = new HashMap<>();
        data4.put("name", "Tokyo");
        data4.put("state", null);
        data4.put("country", "Japan");
        data4.put("capital", true);
        data4.put("population", 9000000);
        data4.put("regions", Arrays.asList("kanto", "honshu"));
        cities.document("TOK").set(data4);

        Map<String, Object> data5 = new HashMap<>();
        data5.put("name", "Beijing");
        data5.put("state", null);
        data5.put("country", "China");
        data5.put("capital", true);
        data5.put("population", 21500000);
        data5.put("regions", Arrays.asList("jingjinji", "hebei"));
        cities.document("BJ").set(data5);
        // [END example_data]
    }