Simplify special case in `has_access` to just use `count`. Docstrings.
Simplify special case in `has_access` to just use `count`. Docstrings.

sheagcraig/sal,sheagcraig/sal,salopensource/sal,salopensource/sal,salopensource/sal,salopensource/sal,sheagcraig/sal,sheagcraig/sal