isDefined makes things a bit nicer to read
isDefined makes things a bit nicer to read


Former-commit-id: babfc31c3e45be7ced50594384e7b2695b02e6e6 [formerly 06dae8000ba27ec3ce9900cc14bd13d9894acfc8]
Former-commit-id: e8e6ea804db0a6eda8f4af335eacff973559ad7b
andrewplummer/Sugar,andrewplummer/Sugar,romancow/Sugar,romancow/Sugar