WicketStuff Lambda is a collection of Java 8 functionality.
'org.wicketstuff:wicketstuff-lambda:7.2.0'
<dependency>
<groupId>org.wicketstuff</groupId>
<artifactId>wicketstuff-lambda</artifactId>
<version>7.2.0</version>
</dependency>
<dependency org="org.wicketstuff" name="wicketstuff-lambda" rev="7.2.0"/>
"org.wicketstuff", "wicketstuff-lambda", "7.2.0"