JFIFxxC      C  " }!1AQa"q2#BR$3br %&'()*456789:CDEFGHIJSTUVWXYZcdefghijstuvwxyz w!1AQaq"2B #3RbrconditionallySelectedSheets = is_array($sheets) ? $sheets : func_get_args(); return $this; } /** * @return array */ public function sheets(): array { return \array_filter($this->conditionalSheets(), function ($name) { return \in_array($name, $this->conditionallySelectedSheets, false); }, ARRAY_FILTER_USE_KEY); } /** * @return array */ abstract public function conditionalSheets(): array; }