src/vs/workbench/services/filesConfiguration/common/filesConfigurationService.ts/FilesConfigurationService/preventSaveConflicts
class FilesConfigurationService:	preventSaveConflicts(resource: URI, language?: string): boolean {
		return this.configurationService.getValue('files.saveConflictResolution', { resource, overrideIdentifier: language }) !== 'overwriteFileOnDisk';
	}