problems using a static class extending JSPDynPage

When I use the pdk with netweaver for creating a new portal object and I want to create a new PortalComponent (JSPDynpage) the pdk generates me the next code:

public class TestJspDynPage extends PageProcessorComponent {

public DynPage getPage(){

return new TestJspDynPageDynPage(); }

public <b>static</b> class TestJspDynPageDynPage extends JSPDynPage{

public void doInitialization(){ }

public void doProcessAfterInput() throws PageException {}

public void doProcessBeforeOutput() throws PageException {}

}

}

Is there any reason for creating the new class that extends JSPDynPage static ?

Regards.