text: import click
  import yaml
  from flask import current_app as app
  from flask.cli import AppGroup
  from flask.cli import with_appcontext
  
  config_cli = AppGroup("config", help="Manage configuration.")
  
  
  @config_cli.command("show")
  @with_appcontext
  def show_config():
      """Show the current configuration."""
      click.echo(yaml.dump(dict(app.config)))
  