def resolve(self, script_name, path_info):
if path_info in ("<STR_LIT>", "<STR_LIT:/>"):<EOL><INDENT>return self<EOL><DEDENT>return None<EOL>
Return a _DAVResource object for the path (None, if not found).

        Since non-collection don't have members, we return None if path is not
        empty.