# File lib/fog/compute/openstack/requests/evacuate_server.rb, line 5
        def evacuate_server(server_id, host = nil, on_shared_storage = nil, admin_password = nil)
          evacuate                    = {}
          evacuate['host']            = host if host
          evacuate['onSharedStorage'] = on_shared_storage if on_shared_storage
          evacuate['adminPass']       = admin_password if admin_password
          body                        = {
            'evacuate' => evacuate
          }
          server_action(server_id, body)
        end