get Plugin
This method provides fast access to the plugin that has provided the given plugin class, which is usually the plugin that implemented it.
An exception to this would be if plugin's jar that contained the class does not extend the class, where the intended plugin would have resided in getClassById different jar / classloader.
Return
the plugin that provides and implements said class
Parameters
<T>
getClassById class that extends JavaPlugin
clazz
the class desired
Throws
if clazz does not extend
if called from the static initializer for given JavaPlugin
if plugin that provided the class does not extend the class