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<b>Warning</b>:  session_start(): open(/var/lib/php/sessions/sess_qi8q0d135s5qlj69a7475ioe7a, 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 />
static Set similarEmptySet(Collection m) {
  if (m instanceof TreeSet) ret new TreeSet(((TreeSet) m).comparator());
  if (m instanceof LinkedHashSet) ret new LinkedHashSet;
  
  ret new HashSet;
}

static Set similarEmptySet(Map m) {
  if (m instanceof TreeMap) ret new TreeSet(((TreeMap) m).comparator());
  if (m instanceof LinkedHashMap) ret new LinkedHashSet;
  
  ret new HashSet;
}