code: def install_module(
      self,
      install_optional=False,
      production_only=False,
      force=False,
      frozen_lockfile=True,
      node_paths=None):
      
      args=self._get_installation_args(
        install_optional=install_optional,
        production_only=production_only,
        force=force,
        frozen_lockfile=frozen_lockfile)
      return self.run_command(args=args, node_paths=node_paths)
docs: Returns a command that when executed will install node package.
  
      :param install_optional: True to install optional dependencies.
      :param production_only: True to only install production dependencies, i.e.
        ignore devDependencies.
      :param force: True to force re-download dependencies.
      :param frozen_lockfile: True to disallow automatic update of lock files.
      :param node_paths: A list of path that should be included in $PATH when
        running installation.