tree 1c2c6807c5111d9ea813739aeca5c49829a7128a
parent 8b7af93f8c3c9f110c293dcf7ae15476fe99c578
author Gary Gregory <garydgregory@gmail.com> 1610853917 -0500
committer Gary Gregory <garydgregory@gmail.com> 1610853917 -0500

Use isEmpty().