code: def check_dataset_metadata(client):
      
      # Find pre 0.3.4 metadata files.
      old_metadata = list(_dataset_metadata_pre_0_3_4(client))
  
      if not old_metadata:
          return True
  
      click.secho(
          WARNING + 'There are metadata files in the old location.'
          '\n  (use "renku migrate datasets" to move them)\n\n\t' + '\n\t'.join(
              click.style(str(path.relative_to(client.path)), fg='yellow')
              for path in old_metadata
          ) + '\n'
      )
  
      return False
docs: Check location of dataset metadata.