Remote file identifier; may be empty. Can be used by the current user across application restarts or even from other devices. Uniquely identifies a file, but a file can have a lot of different valid identifiers. If the identifier starts with "http://" or "https://", it represents the HTTP URL of the file. TDLib is currently unable to download files if only their URL is known. If downloadFile/addFileToDownloads is called on such a file or if it is sent to a secret chat, TDLib starts a file generation process by sending updateFileGenerationStart to the application with the HTTP URL in the original_path and "#url#" as the conversion string. Application must generate the file by downloading it to the specified location.
Optional is_True, if the file is currently being uploaded (or a remote copy is being generated by some other means).
Optional is_True, if a remote copy is fully available.
Unique file identifier; may be empty if unknown. The unique file identifier which is the same for the same file even for different users and is persistent over time.
Size of the remote available part of the file, in bytes; 0 if unknown.
Represents a remote file.