Returns the plugins used for this dialog.
        
        :param      typ      | <str> || None
                    group    | <str> || None
        
        :return     [<XWizardPlugin>, ..]

def plugins( self, typ = None, group = None ):
        """
        Returns the plugins used for this dialog.
        
        :param      typ      | <str> || None
                    group    | <str> || None
        
        :return     [<XWizardPlugin>, ..]
        """
        if ( typ is None ):
            output = []
            for wlang in self._plugins.values():
                for wgrp in wlang.values():
                    output += wgrp
            return output
            
        elif ( group is None ):
            output = []
            for wgrp in self._plugins.get(nativestring(typ), {}).values():
                output += wgrp
            return output
        
        else:
            return self._plugins.get(nativestring(typ), {}).get(nativestring(group), [])