src/vs/workbench/services/configuration/common/configurationEditingService.ts/ConfigurationEditingService/save
class ConfigurationEditingService:	private async save(model: ITextModel, operation: IConfigurationEditOperation): Promise<void> {
		try {
			await this.textFileService.save(model.uri, { ignoreErrorHandler: true });
		} catch (error) {
			if ((<FileOperationError>error).fileOperationResult === FileOperationResult.FILE_MODIFIED_SINCE) {
				throw this.toConfigurationEditingError(ConfigurationEditingErrorCode.ERROR_CONFIGURATION_FILE_MODIFIED_SINCE, operation.target, operation);
			}
			throw this.toConfigurationEditingError(ConfigurationEditingErrorCode.ERROR_INTERNAL, operation.target, operation);
		}
	}