Function getAgentAccessAll

Get an overview of what access is defined for agents.

This function works with Solid Pods that implement either the Web Access Control spec or the Access Control Policies proposal, with some caveats:

• If access to the given Resource has been set using anything other than the functions in this module, it is possible that it has been set in a way that prevents this function from reliably reading access.
• It will only return access specified explicitly for the given Agent within the ACL linked to the resource. If additional restrictions or external resources are used, those will not be reflected in the return value of this function.
• It will only return access specified explicitly for the given Resource. In other words, if the Resource is a Container, the returned Access may not apply to contained Resources.
• If the current user does not have permission to view access for the given Resource, this function will resolve to null.