OptionalappendAppend to the destination via APPE instead of STOR. When set, offset is ignored.
Use this to resume an interrupted upload by sending only the remaining bytes.
OptionaloffsetByte offset to resume the upload from, issued as REST <offset> before STOR, overwriting
the destination from that offset onward. Ignored when append is set.
OptionaltypeTransfer representation type; defaults to 'binary'.
Per-transfer options for FtpSession.put.