This is multiple libraries that can help with common problems for the solution or testing the solution.
'ca.pgon:st:3.0'
<dependency>
<groupId>ca.pgon</groupId>
<artifactId>st</artifactId>
<version>3.0</version>
</dependency>
<dependency org="ca.pgon" name="st" rev="3.0"/>
"ca.pgon", "st", "3.0"