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<b>Warning</b>:  session_start(): open(/var/lib/php/sessions/sess_rvkupv4u7dndh9ked9i366p5rp, 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 IVar<S> persistentSecretText(fS persistenceName) {
  ret new IVar<S>() {
    File f = secretProgramFile(urlencode(persistenceName));
    
    public synchronized void set(S a) { saveTextFile(f, a); }
    public synchronized A get() { ret loadTextFile(f); }
    public synchronized bool has() { ret fileExists(f); }
    public synchronized void clear() { set(null); }
  };
}