code: func (e *RoleService) Delete(name string) (err error) {
  	path := fmt.Sprintf("roles/%s", name)
  	err = e.client.magicRequestDecoder("DELETE", path, nil, nil)
  	return
  }
docs: // Delete a role from the Chef server.
  //
  // Chef API docs: https://docs.chef.io/api_chef_server.html#roles-name