NMSettingVPN @NM_SETTING_VPN_ERROR_UNKNOWN: @NM_SETTING_VPN_ERROR_INVALID_PROPERTY: @NM_SETTING_VPN_ERROR_MISSING_PROPERTY: @void: @Returns: @key: @value: @user_data: @void: @Returns: @setting: @Returns: @setting: @Returns: @setting: @Returns: @setting: @Returns: @setting: @key: @item: @setting: @key: @Returns: @setting: @key: @Returns: @setting: @func: @user_data: @setting: @Returns: @setting: @key: @secret: @setting: @key: @Returns: @setting: @key: @Returns: @setting: @func: @user_data: