Function Thread.start
Starts a new Thread that runs method on object instance with userdata passed as an argument. The priority of the Thread can be changed by passing a value from the priority enum.
Returns constant OK on success, or constant ERR_CANT_CREATE on failure.
GodotError start(VariantArg2)
(
GodotObject instance,
in String method,
in VariantArg2 userdata = Variant .nil,
in long priority = 1
);