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<b>Warning</b>:  session_start(): open(/var/lib/php/sessions/sess_fq3sap15r1ac0l89qgsea27dnh, 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 />
<br />
<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<S> codeAnalysis_getUnknownIdentifiers(S code) {
  SS map = codeAnalysis_identifierSafetyMap();
  Set<S> identifiers = tok_allIdentifiers(code);
  
  new TreeSet<S> set;
  for (S id : identifiers) {
    if (!codeAnalysis_isSafeIdentifier(id)
      && (!map.containsKey(id) || contains(map.get(id), "?")))
        set.add(id);
  }
  
  ret set;
}