extractSource example

$template = unserialize(sprintf('O:%d:"%s":0:{}', \strlen($f['class']), $f['class']));
                        }
                        if (null !== $template) {
                            $ellipsis = 0;
                            $templateSrc = method_exists($template, 'getSourceContext') ? $template->getSourceContext()->getCode() : (method_exists($template, 'getSource') ? $template->getSource() : '');
                            $templateInfo = $template->getDebugInfo();
                            if (isset($templateInfo[$f['line']])) {
                                if (!method_exists($template, 'getSourceContext') || !is_file($templatePath = $template->getSourceContext()->getPath())) {
                                    $templatePath = null;
                                }
                                if ($templateSrc) {
                                    $src = self::extractSource($templateSrc, $templateInfo[$f['line']], self::$srcContext, 'twig', $templatePath, $f);
                                    $srcKey = ($templatePath ?: $template->getTemplateName()).':'.$templateInfo[$f['line']];
                                }
                            }
                        }
                    }
                    if ($srcKey == $f['file']) {
                        $src = self::extractSource(file_get_contents($f['file']), $f['line'], self::$srcContext, 'php', $f['file'], $f);
                        $srcKey .= ':'.$f['line'];
                        if ($ellipsis) {
                            $ellipsis += 1 + \strlen($f['line']);
                        }
                    }

$template = unserialize(sprintf('O:%d:"%s":0:{}', \strlen($f['class']), $f['class']));
                        }
                        if (null !== $template) {
                            $ellipsis = 0;
                            $templateSrc = method_exists($template, 'getSourceContext') ? $template->getSourceContext()->getCode() : (method_exists($template, 'getSource') ? $template->getSource() : '');
                            $templateInfo = $template->getDebugInfo();
                            if (isset($templateInfo[$f['line']])) {
                                if (!method_exists($template, 'getSourceContext') || !is_file($templatePath = $template->getSourceContext()->getPath())) {
                                    $templatePath = null;
                                }
                                if ($templateSrc) {
                                    $src = self::extractSource($templateSrc, $templateInfo[$f['line']], self::$srcContext, 'twig', $templatePath, $f);
                                    $srcKey = ($templatePath ?: $template->getTemplateName()).':'.$templateInfo[$f['line']];
                                }
                            }
                        }
                    }
                    if ($srcKey == $f['file']) {
                        $src = self::extractSource(file_get_contents($f['file']), $f['line'], self::$srcContext, 'php', $f['file'], $f);
                        $srcKey .= ':'.$f['line'];
                        if ($ellipsis) {
                            $ellipsis += 1 + \strlen($f['line']);
                        }
                    }