src/SourceLocator/Type/Composer/Factory/MakeLocatorForComposerJson.php
private function prefixWithInstallationPath(array $paths, string $trimmedInstallationPath) : array
    {
        return array_map(function (array $paths) use ($trimmedInstallationPath) : array {
            return $this->prefixPaths($paths, $trimmedInstallationPath);
        }, $paths);
    }
private function prefixWithInstallationPath(array $paths, string $trimmedInstallationPath) : array
    {
        return array_map(function (array $paths) use ($trimmedInstallationPath) : array {
            return $this->prefixPaths($paths, $trimmedInstallationPath);
        }, $paths);
    }
@param array<string, array<int, string>> $paths

@return array<string, array<int, string>>