tree 85028367e57d9fed10ac40ab60255d11e9749d3a
parent 2e9785b93a2aacedd84abc6a646cdb200940b818
author Gary Gregory <garydgregory@gmail.com> 1610892765 -0500
committer Gary Gregory <garydgregory@gmail.com> 1610892765 -0500

Use isEmpty().

Prefix internal class name with Abstract.
Fix Checkstyle XML.