Polishing.

Reformat code.

See #4167.
Original pull request: #4168.

Author: mp911de

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/ReactiveMongoTemplate.java

@@ -2141,10 +2141,12 @@ public <T> Flux<ChangeStreamEvent<T>> changeStream(@Nullable String database, @N
 						publisher = filter.isEmpty() ? db.watch(Document.class) : db.watch(filter, Document.class);
 					}
 
-					if(options.isResumeAfter()) {
-						publisher = options.getResumeToken().map(BsonValue::asDocument).map(publisher::resumeAfter).orElse(publisher);
+					if (options.isResumeAfter()) {
+						publisher = options.getResumeToken().map(BsonValue::asDocument).map(publisher::resumeAfter)
+								.orElse(publisher);
 					} else if (options.isStartAfter()) {
-						publisher = options.getResumeToken().map(BsonValue::asDocument).map(publisher::startAfter).orElse(publisher);
+						publisher = options.getResumeToken().map(BsonValue::asDocument).map(publisher::startAfter)
+								.orElse(publisher);
 					}
 					publisher = options.getCollation().map(Collation::toMongoCollation).map(publisher::collation)
 							.orElse(publisher);

spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/ReactiveMongoTemplateUnitTests.java

@@ -1470,7 +1470,9 @@ void changeStreamOptionStartAftershouldApplied() {
 		when(changeStreamPublisher.fullDocument(any())).thenReturn(changeStreamPublisher);
 
 		BsonDocument token = new BsonDocument("token", new BsonString("id"));
-		template.changeStream("database", "collection", ChangeStreamOptions.builder().startAfter(token).build(), Object.class).subscribe();
+		template
+				.changeStream("database", "collection", ChangeStreamOptions.builder().startAfter(token).build(), Object.class)
+				.subscribe();
 
 		verify(changeStreamPublisher).startAfter(eq(token));
 	}