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<b>Warning</b>:  session_start(): open(/var/lib/php/sessions/sess_a19og2fs71ubm81138032n3inb, O_RDWR) failed: No space left on device (28) in <b>/var/www/tb-usercake/models/config.php</b> on line <b>51</b><br />
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<b>Warning</b>:  session_start(): Failed to read session data: files (path: /var/lib/php/sessions) in <b>/var/www/tb-usercake/models/config.php</b> on line <b>51</b><br />
// if f returns null, go through structure
sO transform_transformableAndList(IF1 f, O o) {
  if (o == null) null;
  ping();
  try object f.get(o);
  
  if (o cast Transformable)
    ret o.transformUsing(x -> transform(f, x));
  
  if (o cast L)
    ret map(x -> transform_transformableAndList(f, x), o);
    
  fail("Don't know how to transform: " + className(o));
}