/** * @inheritdoc */ public function appendLine($append, $useHandle = false) { $this->lazyOutputInit(); if ($this->output instanceof Closure && $useHandle) { $ret = $this->output->__invoke($append); } else { $ret = $this->output->append($append, $useHandle); } $this->appendLine = $this->appendLine === null ? $ret : ($this->appendLine .= $ret); return $this; }