code: def list_templates() -> None:
      click.echo("Available templates:")
      for model in template_handler.list_template():
          click.echo("- {}".format(model))
  
imports: import click
  from tfx.tools.cli import labels
  from tfx.tools.cli.cli_context import Context
  from tfx.tools.cli.cli_context import pass_context
  from tfx.tools.cli.handler import template_handler
label_desc: Use image node_id 2 for calling a global function with example usage: list_templates() without return types