Closes all the file descriptors previously passed to the object with g_subprocess_launcher_take_fd(), g_subprocess_launcher_take_stderr_fd(), etc.
After calling this method, any subsequent calls to
G_IO_ERROR_CLOSED. This method is idempotent if
called more than once.
This function is called automatically when the
is disposed, but is provided separately so that garbage collected
language bindings can call it earlier to guarantee when FDs are closed.
Available since: 2.68