Deprecate getCollections in favor of listCollections

google-cloud-clients/google-cloud-firestore/src/main/java/com/google/cloud/firestore/DocumentReference.java

@@ -358,7 +358,7 @@ public ApiFuture<DocumentSnapshot> get() {
    * @throws FirestoreException if the Iterable could not be initialized.
    * @return An Iterable that can be used to fetch all subcollections.
    */
-  public Iterable<CollectionReference> getCollections() {
+  public Iterable<CollectionReference> listCollections() {
     ListCollectionIdsRequest.Builder request = ListCollectionIdsRequest.newBuilder();
     request.setParent(path.toString());
     final ListCollectionIdsPagedResponse response;
@@ -397,6 +397,18 @@ public void remove() {
     };
   }
 
+  /**
+   * Fetches the subcollections that are direct children of this document.
+   *
+   * @deprecated Use `listCollections()`.
+   *
+   * @throws FirestoreException if the Iterable could not be initialized.
+   * @return An Iterable that can be used to fetch all subcollections.
+   */
+  public Iterable<CollectionReference> getCollections() {
+    return listCollections();
+  }
+
   /**
    * Starts listening to the document referenced by this DocumentReference.
    *

google-cloud-clients/google-cloud-firestore/src/main/java/com/google/cloud/firestore/Firestore.java

@@ -49,6 +49,17 @@ public interface Firestore extends Service<FirestoreOptions>, AutoCloseable {
    * @return An Iterable that can be used to fetch all collections.
    */
   @Nonnull
+  Iterable<CollectionReference> listCollections();
+
+  /**
+   * Fetches the root collections that are associated with this Firestore database.
+   *
+   * @deprecated Use `listCollections()`.
+   *
+   * @throws FirestoreException if the Iterable could not be initialized.
+   * @return An Iterable that can be used to fetch all collections.
+   */
+  @Nonnull
   Iterable<CollectionReference> getCollections();
 
   /**

google-cloud-clients/google-cloud-firestore/src/main/java/com/google/cloud/firestore/FirestoreImpl.java

@@ -149,9 +149,15 @@ public DocumentReference document(@Nonnull String documentPath) {
 
   @Nonnull
   @Override
-  public Iterable<CollectionReference> getCollections() {
+  public Iterable<CollectionReference> listCollections() {
     DocumentReference rootDocument = new DocumentReference(this, this.databasePath);
-    return rootDocument.getCollections();
+    return rootDocument.listCollections();
+  }
+
+  @Nonnull
+  @Override
+  public Iterable<CollectionReference> getCollections() {
+    return listCollections();
   }
 
   @Nonnull

google-cloud-clients/google-cloud-firestore/src/test/java/com/google/cloud/firestore/it/ITSystemTest.java

@@ -552,7 +552,7 @@ public void omitWriteResultForDocumentTransforms()
   }
 
   @Test
-  public void getCollections() throws Exception {
+  public void listCollections() throws Exception {
     // We test with 21 collections since 20 collections are by default returned in a single paged
     // response.
     String[] collections =
@@ -568,7 +568,7 @@ public void getCollections() throws Exception {
     }
     batch.commit().get();
 
-    Iterable<CollectionReference> collectionRefs = randomDoc.getCollections();
+    Iterable<CollectionReference> collectionRefs = randomDoc.listCollections();
 
     int count = 0;
     for (CollectionReference collectionRef : collectionRefs) {