docs: def init_argparser_working_dir(
              self, argparser,
              explanation='',
              help_template=(
                  'the working directory; %(explanation)s'
                  'default is current working directory (%(cwd)s)'),
              ):
          """
          Subclass could an extra expanation on how this is used.
  
          Arguments
  
          explanation
              Explanation text for the default help template
          help_template
              A standard help message for this option.
          """
  
          cwd = self.toolchain.join_cwd()
          argparser.add_argument(
              '--working-dir', dest=WORKING_DIR,
              metavar=metavar(WORKING_DIR),
              default=cwd,
              help=help_template % {'explanation': explanation, 'cwd': cwd},
          )