Methods to wait until a specific job is done, or until specific types of work are complete.


git-svn-id: https://svn.calendarserver.org/repository/calendarserver@13984 e27351fd-9f3e-4f54-a53b-843176b1656c
Add/remove group member APIs.


git-svn-id: https://svn.calendarserver.org/repository/calendarserver@13985 e27351fd-9f3e-4f54-a53b-843176b1656c
Preserve any text prior to the root element when writing. Use fixed element order when writing.


git-svn-id: https://svn.calendarserver.org/repository/calendarserver@13986 e27351fd-9f3e-4f54-a53b-843176b1656c