code: def cluster_text_input(cluster, title=None):
      
      if not title:
          title = 'Type in the name of your cluster and press Enter/Return:'
      return TextInput(value=cluster.name, title=title)
docs: Create an :class:`~bokeh.models.widgets.TextInput` using
      the cluster.name as the default value and title.
  
      If no title is provided use, 'Type in the name of your cluster
      and press Enter/Return:'.