public Map<String, Set<ObjectPermission.Type>> getConnectionPermissions() {
        return connectionPermissions;
    }
Returns a map of connection IDs to the set of permissions granted for
that connection. If no permissions are granted to a particular
connection, its ID will not be present as a key in the map. This map is
mutable, and changes to this map will affect the permission set
directly.

@return
    A map of connection IDs to the set of permissions granted for that
    connection.
guacamole/src/main/java/org/apache/guacamole/rest/permission/APIPermissionSet.java