As a special exception to the normal conventions for functions that
use GError, if this function returns FALSE (and sets error) then
bytes_written will be set to the number of bytes that were
successfully written before the error was encountered. This
functionality is only available from C. If you need it from another
language then you must write your own loop around
OutputStream.writeAsync.
Finishes an asynchronous stream write operation started with OutputStream.writeAllAsync.
As a special exception to the normal conventions for functions that use GError, if this function returns FALSE (and sets error) then bytes_written will be set to the number of bytes that were successfully written before the error was encountered. This functionality is only available from C. If you need it from another language then you must write your own loop around OutputStream.writeAsync.