Is the class a System Class.
A System class is a class that is visible to a webapplication,
but that cannot be overridden by the contents of WEB-INF/lib or
clazz - The fully qualified name of the class.
True if the class is a system class.
boolean isServerClass(java.lang.Class<?> clazz)
Is the class a Server Class.
A Server class is a class that is part of the implementation of
the server and is NIT visible to a webapplication. The web
application may provide it's own implementation of the class,
to be loaded from WEB-INF/lib or WEB-INF/classes