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

@@ -103,6 +103,11 @@ 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;
 	}