Polishing.

Reformat code. Add since tags.

See #3395
Original pull request: #3554.

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

@@ -103,8 +103,13 @@ public enum MongoRegexCreator {
 		}
 	}
 
+	/**
+	 * @param source
+	 * @return
+	 * @since 2.2.14
+	 */
 	public Object toCaseInsensitiveMatch(Object source) {
-		return source instanceof String ? new BsonRegularExpression(Pattern.quote((String)source), "i") : source;
+		return source instanceof String ? new BsonRegularExpression(Pattern.quote((String) source), "i") : source;
 	}
 
 	private String prepareAndEscapeStringBeforeApplyingLikeRegex(String source, MatchMode matcherType) {

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/repository/query/MongoQueryCreator.java

@@ -404,7 +404,7 @@ class MongoQueryCreator extends AbstractQueryCreator<Query, Criteria> {
 	private java.util.List<?> nextAsList(Iterator<Object> iterator, Part part) {
 
 		Streamable<?> streamable = asStreamable(iterator.next());
-		if(!isSimpleComparisionPossible(part))  {
+		if (!isSimpleComparisionPossible(part)) {
 			streamable = streamable.map(MongoRegexCreator.INSTANCE::toCaseInsensitiveMatch);
 		}