first flag that can be used by subclasses.
the object is permanently locked in READONLY mode. Only read locks can be performed on the object.
the object can be locked and unlocked with
gst_mini_object_lock() and gst_mini_object_unlock().
the object is expected to stay alive
even after gst_deinit() has been called and so should be ignored by leak
detection tools. (Since: 1.10)
Flags for the mini object