@Override
    public void removePermissions(Set<SystemPermission> permissions)
            throws GuacamoleException {
        systemPermissionService.deletePermissions(getCurrentUser(), entity, permissions);
    }
Initializes this permission set with the current user and the entity
to whom the permissions in this set are granted.

@param currentUser
    The user who queried this permission set, and whose permissions
    dictate the access level of all operations performed on this set.

@param entity
    The entity to whom the permissions in this set are granted.

@param effectiveGroups
    The identifiers of all groups that should be taken into account
    when determining the permissions effectively granted to the entity.
    If no groups are given, only permissions directly granted to the
    entity will be used.
extensions/guacamole-auth-jdbc/modules/guacamole-auth-jdbc-base/src/main/java/org/apache/guacamole/auth/jdbc/permission/SystemPermissionSet.java