old_contents: """Coordination chatroom game."""
  
  from wallace.networks import FullyConnected
  from wallace.nodes import Agent
  from wallace.experiments import Experiment
  
  
  class CoordinationChatroom(Experiment):
      """Define the structure of the experiment."""
  
      def __init__(self, session):
          """Initialize the experiment."""
          super(CoordinationChatroom, self).__init__(session)
          self.experiment_repeats = 1
          self.num_participants = 3
          self.initial_recruitment_size = self.num_participants
          self.setup()
  
      def create_network(self):
          """Create a new network."""
          return FullyConnected(max_size=self.num_participants)
  
      def info_post_request(self, node, info):
          """Run when a request to create an info is complete."""
          for agent in node.neighbors():
              node.transmit(what=info, to_whom=agent)
  
      def node_type(self):
          """The type of node to make."""
          return Agent
  
new_contents: """Coordination chatroom game."""
  
  from wallace.networks import FullyConnected
  from wallace.nodes import Agent
  from wallace.experiments import Experiment
  
  
  class CoordinationChatroom(Experiment):
      """Define the structure of the experiment."""
  
      def __init__(self, session):
          """Initialize the experiment."""
          super(CoordinationChatroom, self).__init__(session)
          self.experiment_repeats = 1
          self.num_participants = 3
          self.initial_recruitment_size = self.num_participants
          self.setup()
  
      def create_network(self):
          """Create a new network."""
          return FullyConnected(max_size=self.num_participants)
  
      def info_post_request(self, node, info):
          """Run when a request to create an info is complete."""
          for agent in node.neighbors():
              node.transmit(what=info, to_whom=agent)
  
      def create_node(self, participant, network):
          """Create a node for a participant."""
          return Agent(network=network, participant=participant)
  
subject: add create_node to chatroom demo