new DeviceMgmtPermission("*:*",",open,register,unregister,") does not result in IAE

public DeviceMgmtPermission(java.lang.String name,
                    java.lang.String actions)
...
Parameters:
...
actions - comma-separated list of device management operations: register unregister or open.
Throws:
...
java.lang.IllegalArgumentException - if actions is null, empty or contains an action other than the specified possible actions.
==================

A call to

new DeviceMgmtPermission("*:*",",open,register,unregister,")


does not result in IAE, i.e. empty action is let in from viewpoint of API.