docs: def update(name, maximum_version=None, required_version=None):
      '''
      Update a PowerShell module to a specific version, or the newest
  
      :param name: Name of a Powershell module
      :type  name: ``str``
  
      :param maximum_version: The maximum version to install, e.g. 1.23.2
      :type  maximum_version: ``str``
  
      :param required_version: Install a specific version
      :type  required_version: ``str``
  
      CLI Example:
  
      .. code-block:: bash
  
          salt 'win01' psget.update PowerPlan
      '''
      # Putting quotes around the parameter protects against command injection
      flags = [('Name', name)]
  
      if maximum_version is not None:
          flags.append(('MaximumVersion', maximum_version))
      if required_version is not None:
          flags.append(('RequiredVersion', required_version))
  
      params = ''
      for flag, value in flags:
          params += '-{0} {1} '.format(flag, value)
      cmd = 'Update-Module {0} -Force'.format(params)
      _pshell(cmd)
      return name in list_modules()