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<b>Warning</b>:  session_start(): open(/var/lib/php/sessions/sess_aurikfud2627m0c5e4gk27stvn, 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 />
srecord noeq CountHolesInRegion(IImageRegion region) {
  int holes;
  
  int get() {
    if (region == null) ret 0;
    var borderWalker = new RegionBorder_innerPoints_v2(region);
    borderWalker.onNewTrace(isHole -> { if (isHole) holes++; });
    borderWalker.run();
    ret holes;
  }
}