private function createRouterClassTemplate(string $rootRoute, string $body): string
    {
        $template = <<<'PHP'
<?php
return function ($method, $uri) {
    if ($uri === '') {
{root_route}
    } elseif ($uri[0] !== '/') {
        throw new \RuntimeException("Cannot match route: non-empty uri must be prefixed with '/', '{$uri}' given");
    }

    $segments = \explode('/', \substr($uri, 1));
{body}
};
PHP;

        return \strtr($template, ['{root_route}' => $rootRoute, '{body}' => $body]);
    }
private function createRouterClassTemplate(string $rootRoute, string $body): string
    {
        $template = <<<'PHP'
<?php
return function ($method, $uri) {
    if ($uri === '') {
{root_route}
    } elseif ($uri[0] !== '/') {
        throw new \RuntimeException("Cannot match route: non-empty uri must be prefixed with '/', '{$uri}' given");
    }

    $segments = \explode('/', \substr($uri, 1));
{body}
};
PHP;

        return \strtr($template, ['{root_route}' => $rootRoute, '{body}' => $body]);
    }
private function createRouterClassTemplate ( string $ rootRoute , string $ body ) : string { $ template =  <<<'PHP'
<?php
return function ($method, $uri) {
    if ($uri === '') {
{root_route}
    } elseif ($uri[0] !== '/') {
        throw new \RuntimeException("Cannot match route: non-empty uri must be prefixed with '/', '{$uri}' given");
    }

    $segments = \explode('/', \substr($uri, 1));
{body}
};
PHP ; return \ strtr ( $ template , [ '{root_route}' => $ rootRoute , '{body}' => $ body ] ) ; }
Creating a template for the router class.

@param string $rootRoute
@param string $body

@return string
Creating a template for the router class .