URITemplaterather than our own
AtomDatefor date formatting and parsing rather than our
ResponseContextthat streams collection details
ContentProvideror maybe both (how do they relate?)
StandardDavResponseavailable to security filter as well as servlet
DavResourcerather than directly on
/dav/users/shows 404 for each member resource
PROPFINDrequests made by ticketed users (i.e. properties that should only be exposed to the resource's owner)?