public function testUserDeleteKey()
 {
     $this->_createuser();
     $publicKey = file_get_contents(getcwd() . "/testkey1.pub");
     $result = $this->_api->createUserKey($this->_userName, $publicKey);
     $this->_api->deleteUserKey($this->_userName, $result->key_id);
     $result = $this->_api->getUserKeyList($this->_userName);
     $this->assertEmpty($result);
 }