llamaindexfunctionsFunction: exists()On this pageFunction: exists() exists(path): Promise<boolean> Checks if a file exists. Analogous to the os.path.exists function from Python. Parameters • path: string The path to the file to check. Returns Promise<boolean> A promise that resolves to true if the file exists, false otherwise. Defined in packages/llamaindex/src/storage/FileSystem.ts:11