def setup_nodes(self):
    'Override this method to customize test node setup'
    extra_args = None
    if hasattr(self, 'extra_args'):
        extra_args = self.extra_args
    self.add_nodes(self.num_nodes, extra_args)
    self.start_nodes()
Override this method to customize test node setup
def setup_nodes(self):
    
    extra_args = None
    if hasattr(self, 'extra_args'):
        extra_args = self.extra_args
    self.add_nodes(self.num_nodes, extra_args)
    self.start_nodes()