Retrieve the permissions assigned to a specific file in a Data Room.

The response separates permissions along two axes:

• groupPermissions: the permission each group has on the file.
• userPermissions: the individual permission each user has on the file, assigned directly to that user (separate from any group they belong to).

A user's effective access to the file is the highest of their group's permission (from every group they belong to) and their individual permission. To compute the effective permission for a given user, take the maximum of the permissions from groupPermissions (for the groups that user is a member of) and the user's entry in userPermissions, if present.