func webPlugInInitialize ()Initializes the plug-in.
func webPlugInStart ()Tells the plug-in to start normal operation.
func webPlugInStop ()Tells the plug-in to stop normal operation.
Discussion 解説
Typically, this method frees the memory and other resources used by the plug-in. For example, if the plug-in had a copy of a WebPlugInContainer object, this method should relinquish ownership of that object. Do not send any other messages to the plug-in after invoking this method, because calling this method destroys the plug-in. No other methods in this interface may be called after the application has called this method.