I was interested in checking out SSHD performs some SSL work to ensure that the work on SSL2 in MINA would be compatible and found out that Maven in Eclipse keeps throwing error about being unable to find "maven-clean-plugin-3.1.0" in all 14 pom.xml files.
"No marketplace entries found to handle Execution auto-clean-key-files, in /sshd-contrib/pom.xml in Eclipse. Please see Help for more information."