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class FooOutputStream : GLib.OutputStream {
public override ssize_t write (uint8[] buffer, Cancellable? cancellable = null) throws IOError {
throw new IOError.FAILED ("");
}
public override bool close (Cancellable? cancellable = null) throws IOError {
return true;
}
}
void main () {
try {
var output = new FooOutputStream ();
size_t bytes_written;
output.write_all ("Hello world!".data, out bytes_written);
} catch (IOError e) {
}
}
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