A Java version of the Python defaultdict pattern.
'com.github.ansell.jdefaultdict:jdefaultdict:0.1'
<dependency>
<groupId>com.github.ansell.jdefaultdict</groupId>
<artifactId>jdefaultdict</artifactId>
<version>0.1</version>
</dependency>
<dependency org="com.github.ansell.jdefaultdict" name="jdefaultdict" rev="0.1"/>
"com.github.ansell.jdefaultdict", "jdefaultdict", "0.1"