src/vs/workbench/contrib/bulkEdit/browser/bulkFileEdits.ts/FileUndoRedoElement/constructor
class FileUndoRedoElement:	constructor(
		readonly label: string,
		readonly operations: IFileOperation[],
		readonly confirmBeforeUndo: boolean
	) {
		this.resources = (<URI[]>[]).concat(...operations.map(op => op.uris));
	}