wicket-core/src/main/java/org/apache/wicket/core/util/string/package.html
wicket-util/src/main/java/org/apache/wicket/util/string/package.html

wicket-core/src/main/java/org/apache/wicket/markup/html/pages/ExceptionErrorPage.java
wicket-util/src/main/java/org/apache/wicket/util/string/Strings.java

wicket-core/src/main/java/org/apache/wicket/core/util/resource/locator/package.html
wicket-util/src/main/java/org/apache/wicket/util/resource/package.html