fix(build): sample checkstyle violations

samples/snippets/src/main/java/com/example/firestore/Quickstart.java

@@ -119,7 +119,7 @@ void addDocument(String docName) throws Exception {
     }
   }
 
-  void runAQuery() throws Exception {
+  void runQuery() throws Exception {
     // [START fs_add_query]
     // asynchronously query for all users born before 1900
     ApiFuture<QuerySnapshot> query =
@@ -177,7 +177,7 @@ void run() throws Exception {
 
     // retrieve all users born before 1900
     System.out.println("########## users born before 1900 ##########");
-    runAQuery();
+    runQuery();
 
     // retrieve all users
     System.out.println("########## All users ##########");

samples/snippets/src/main/java/com/example/firestore/snippets/ManageDataSnippets.java

@@ -412,7 +412,7 @@ void writeBatch() throws Exception {
     ApiFuture<List<WriteResult>> future = batch.commit();
     // ...
     // future.get() blocks on batch commit operation
-    for (WriteResult result :future.get()) {
+    for (WriteResult result : future.get()) {
       System.out.println("Update time : " + result.getUpdateTime());
     }
     // [END fs_write_batch]

samples/snippets/src/main/java/com/example/firestore/snippets/QueryDataSnippets.java

@@ -109,7 +109,7 @@ void prepareExamples() throws Exception {
    *
    * @return query
    */
-  Query createAQuery() throws Exception {
+  Query createQuery() throws Exception {
     // [START fs_create_query]
     // Create a reference to the cities collection
     CollectionReference cities = db.collection("cities");
@@ -130,7 +130,7 @@ Query createAQuery() throws Exception {
    *
    * @return query
    */
-  Query createAQueryAlternate() throws Exception {
+  Query createQueryAlternate() throws Exception {
     // [START fs_create_query_country]
     // Create a reference to the cities collection
     CollectionReference cities = db.collection("cities");

samples/snippets/src/main/java/com/example/firestore/snippets/References.java

@@ -34,7 +34,7 @@ public References(Firestore db) {
    *
    * @return collection reference
    */
-  public CollectionReference getACollectionRef() {
+  public CollectionReference getCollectionRef() {
     // [START fs_collection_ref]
     // Reference to the collection "users"
     CollectionReference collection = db.collection("users");
@@ -47,7 +47,7 @@ public CollectionReference getACollectionRef() {
    *
    * @return document reference
    */
-  public DocumentReference getADocumentRef() {
+  public DocumentReference getDocumentRef() {
     // [START fs_document_ref]
     // Reference to a document with id "alovelace" in the collection "users"
     DocumentReference document = db.collection("users").document("alovelace");
@@ -60,7 +60,7 @@ public DocumentReference getADocumentRef() {
    *
    * @return document reference
    */
-  public DocumentReference getADocumentRefUsingPath() {
+  public DocumentReference getDocumentRefUsingPath() {
     // [START fs_document_path_ref]
     // Reference to a document with id "alovelace" in the collection "users"
     DocumentReference document = db.document("users/alovelace");
@@ -73,7 +73,7 @@ public DocumentReference getADocumentRefUsingPath() {
    *
    * @return document reference in a subcollection
    */
-  public DocumentReference getASubCollectionDocumentRef() {
+  public DocumentReference getSubCollectionDocumentRef() {
     // [START fs_subcollection_ref]
     // Reference to a document in subcollection "messages"
     DocumentReference document =

samples/snippets/src/test/java/com/example/firestore/QuickstartIT.java

@@ -55,7 +55,7 @@ public void testQuickstart() throws Exception {
     addData();
 
     bout.reset();
-    quickstart.runAQuery();
+    quickstart.runQuery();
     String output = bout.toString();
     // confirm that results do not contain aturing
     assertTrue(output.contains("alovelace"));

samples/snippets/src/test/java/com/example/firestore/snippets/QueryDataSnippetsIT.java

@@ -53,8 +53,8 @@ public static void setUpBeforeClass() throws Exception {
   }
 
   @Test
-  public void testCreateAQuery() throws Exception {
-    Query q = queryDataSnippets.createAQuery();
+  public void testCreateQuery() throws Exception {
+    Query q = queryDataSnippets.createQuery();
     Set<String> result = getResultsAsSet(q);
     Set<String> expectedResults = new HashSet<>(Arrays.asList("DC", "TOK", "BJ"));
     assertTrue(Objects.equals(result, expectedResults));