code: def run(self):
      from dvc.exceptions import InvalidArgumentError
      from dvc_render.vega_templates import TEMPLATES
  
      try:
          target = self.args.template
          if target:
              for template in TEMPLATES:
                  if target == template.DEFAULT_NAME:
                      ui.write_json(template.DEFAULT_CONTENT)
                      return 0
              raise InvalidArgumentError(
                  f"Unexpected template: {target}."
              )
  
          for template in TEMPLATES:
              ui.write(template.DEFAULT_NAME)
  
          return 0
      except DvcException:
          logger.exception("")
          return 1
  
imports: import argparse
  import os
  from typing import TYPE_CHECKING, Dict, List, Optional
  from funcy import compact, first, get_in
  from dvc.cli import completion, formatter
  from dvc.cli.command import CmdBase
  from dvc.cli.utils import append_doc_link
  from dvc.exceptions import DvcException
  from dvc.log import logger
  from dvc.ui import ui
  from dvc.utils import format_link
label_desc: Use image node_id 1 for calling the CmdPlotsTemplates obj's underlying member method code with example usage: obj.run() and returns: int, int, int