This is the full Active Object library, if you don't know which one to use, you probably want this one.
'net.java.dev.activeobjects:activeobjects:1.1.5'
<dependency>
<groupId>net.java.dev.activeobjects</groupId>
<artifactId>activeobjects</artifactId>
<version>1.1.5</version>
</dependency>
<dependency org="net.java.dev.activeobjects" name="activeobjects" rev="1.1.5"/>
"net.java.dev.activeobjects", "activeobjects", "1.1.5"