text: public boolean startEvaluate(FormulaCellCacheEntry cce) {if (cce == null) {throw new IllegalArgumentException("cellLoc must not be null");}if (_currentlyEvaluatingCells.contains(cce)) {return false;}_currentlyEvaluatingCells.add(cce);_evaluationFrames.add(new CellEvaluationFrame(cce));return true;}